These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: Yu-Gi-Oh! ARC-V
Anti-Climax Boss: DDD Hell Armageddon the Cruel End Overlord, appearance-wise. It has an awesome effect, but looks like an evil Optimus Prime with no limbs and a crystal main body.
Arc Fatigue: The Qualifying Duels mini-arc, where Yuya must duel four special duelists in order to participate in the upcoming Tournament Arc. The complaints are aimed at the opponents being boring (Michio) or irritating (Kyuando) with uninteresting decks, mediocre duels being dragged on as two-parters, and taking time away from several, more interesting plotlines (Yuzu learning Fusion Summoning, the Dark Duelist's story, and Yuya trying to evolve Pendulum Summoning; the former still receiving an entire episode around it after each duel, along with details on the Dark Duelist plotline.) Though this might change, as the third duel (Mieru) will involve the long forgotten Flip Effects and Ritual Monsters, and the fourth seems to be with Gongenzaka.
While it's practically a series tradition at this point, some fans were not impressed by Yuya's ability to Pendulum Summon coming completely out of nowhere.
However, as Episodes 2 and 3 show, this is treated as an Ass Pull in-universe as well. Whilst everyone was at first drawn to Yuya's Pendulum Summon due to Rule of Cool, their discovering of how he did it in the first place caused them to have the exact same reaction as some of the fans. Even the officials who oversaw the tournament were shocked that something like this could happen at all. Also, Yuya himself doesn't know how the Summon method itself works, and it took him 291 duels just to Pendulum Summon a second time.
The Action Cards are basically this, allowing duelists to just pull Trap and Spell Cards just out of their asses to prolong the duel, and often have no foreshadowing. These however, are Justified in story, but from a writing perspective, can come off as this.
This is balanced a bit by each field having extremely different quirks and the one minute to play a card or forfeit rule, make getting Action Cards a bit of a pain. Basically every Action Trap has a negative effect to Yuya. Also, while the Action Cards help the player to escape dangerous situations, the offensive support is not that big, and the finisher combos are done with the players' cards anyway. It is also later mentioned that a player can only add single Action Card at once.
Base Breaker: Sora, you'll either find him an amusing character, or be irritated with him for being a far more obnoxious expy of Rua/Leo.
Crazy Awesome: Yuya, who rides around the battlefield on cartoon circus animals and is shown running right into Solid Vision giant sweets to find his Action Cards is either this, or too silly to take seriously.
Masumi Kotsu, the LDS Fusion specialist, for being the nicestnote which doesn't say that much of the trio, and her straightforward personality. The Gem Knights popularity also factors in.
Mieru Hochun, the Ritual duelist from the qualifier duels. It helps that her strategy is more realistic than her two goofy predecessor.
Family-Unfriendly Aesop: The advice Yuya's father gave him to "laugh if he feels like crying" can be seen as borderline self-destructive, especially considering the effect his Disappeared Dad status had on the poor kid. It seems like this is intentional though, as when we get to see Yuya following this advice for the first time when he starts to tear up upon the destruction of Odd-Eyes in his Duel with Sora, his laughter sounds disturbingly fake, complete with a borderline Slasher Smile.
Yuya's pendulum being yetanother pendant with mystical powers received this reaction from some fans.
Having another care-free and silly character after just coming off of one also garnered disdain. Compared to Yuma though, Yuya is more toned down in terms of hyperactivity, and he's a HUGE Stepford Smiler, more so than Yuma. In terms of personality, he's really more like a more serious version of Season 1 Judai.
However, Yuya is generally more liked than Yuma, mostly because he has lost only a single time in 20+ episodes. Yes, he's often saved by Action Cards, but his finisher combos are done by his own cards.
Nico Smiley the Clown Hitler has become this in fan-art due to his creepy appearance and persona. Though in canon he has not done anything that odd. Well, except for his greeting of Yuya outside the cuisine Duel School.
Averted by Michio, despite initial IV vibes, thankfully.
Some people found Shun and Yuto to be hilarious in episode 21. Shun for just barging in at the mention of LDS and ignoring Yuzu until he mistakes her for Ruri, and Yuto for knocking Shun unconscious then picking up Yuzu's Polymerization card with Shun on his shoulder.
No mention of LDS using their duel discs as actual cell phones?
While Darker and EdgierYu-Gi-Oh! 5Ds was more popular on hardcore fans, and Lighter and SofterZeXal was more popular in Japan, this series tries to be in the middle. It has the younger looking characters of ZeXal, and the darker storytelling of 5D's. Yuya himself is more GX sized, which is also roundabout in the middle.
The fast story pacing, the reappearance of a few old cards, the return of Fusion, Xyz, Synchro and Ritual Summons, and the fact that duelists with meta decks are appearing in this series also increases the popularity of the show.
Yuya has a Disappeared Dad and has some serious issues that he tries to hide. Later he learns that other people besides him are able to Pendulum Summon monster cards, which is now not exclusively to him.
Yuzu's life has completely changed after meeting Yuto.