Broken Base: Alot of people are divided on the quality of Yu-Gi-Oh GX Abridged since ShadyVox left to persue his music career, some think it's still good, some don't but think Xthedarkone just needs time to find his voice on his own and some have given up entirely on the series. Specifically, this was sparked by episode 19, his take on a much-maligned filler episode of the original series, which barely parodies the episode and instead spends 2/3 of the video on either commentary or a mock trailer for the next one.
Canon Sue: Deconstructed hilariously in Jaden. Despite his constant cocky bragging about "being the best duelist", "being flawless", and winning nearly every duel (with the entire cast begrudgingly admitting that he has a point), he gets humiliated, beaten-up and nearly killed multiple times an episode by pretty much every character he pisses off (i.e. the entire cast). If there is a dog present, he will be chewed on.
Critical Research Failure: Syrus activates a Trap from his hand using Jetroid's effect, while facing an Ancient Gear Golem. Jaden insists that this is bull, but Syrus tells him to read the rules. In reality, Jaden is right - a (possibly now unofficial) ruling states that in this exact situation, Ancient Gear Golem would prevent the Trap from being activated.
Creator's Pet: Syrus. It's later revealed that xthedarkone likes Syrus more as the protagonist and he doesn't like Jaden that much.