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.
Anything regarding the more popular ships, usually Hunhan.
Make fun of Kai's skin or Sehun's lisp.
Kris' lawsuit to SM Entertainment and the public response to it. Many Koreans strongly disapprove of his decision, especially since it appears to be following in the footsteps of the departure of Han Geng from Super Junior while a faction of EXO fans did not approve of the way this affected the remaining members. On the other hand, his Chinese fans and International/Western fans are more sympathetic.
In mid-June 2014, it was confirmed that Baekhyun is dating Taeyeon. Reactions that most fans had ranged from happy for the two, to merely comically distraught, to posting hateful comments on their Instagrams, to suspicion that SM is making this up to make fans forget about Kris filing a lawsuit.
On October 10 2014, Lu Han revealed that he was suing the agency to terminate his contract for multiple reasons including his health, which was proven through photographs and fancams of him on stage, stumbling around in a daze and looking gray and swollen. Chinese/International fans and netizens supported his decision to leave and were incredibly sympathetic. Korean netizens were extremely xenophobic and racist and the agency's official statement did not help at all.
The Dog Bites Back: Many of the fans who believe that Kris and Lu Han had been abused by SM now see their filing lawsuits as this trope.
Ensemble Darkhorse/Face of the Band - Lu Han. Without a doubt, Lu Han was the most popular member of EXO. Not only was he featured in Chinese newspapers regularly, but was voted Asia's Most Handsome Man of 2013. He also had a lot of non-EXO fan supporters for being lead vocal, lead dancer, visual, and an all around Nice Guy. He even starred in a movie called "Back to 20".
Also with One Direction and Justin Bieber's fandom, after the MTV EMA Awards.
Foreshadowing: Late September 2014, a picture of Lu Han appeared to be doing this - in it he's holding Kris's photo (with half of Lu Han's face covered by the photo, making fans unsure as to whether it was actually him) surfaced. As of mid-October 2014, Lu Han had been announced to leave EXO. Averted when it was revealed to be just an EXO fan, as the picture had a watermark which led to the fan's weibo.
Harsher in Hindsight - The MV to Wolf has a skit where Kris leaves the pack (i.e. the other 11 members). Not even a year later, Kris files to terminate his contract with SM Entertainment, hence leaving the group. Also, Lu Han was shown to be put in a hospital, and in October 2014, it was announced that he was seriously ill, and had to leave EXO.
Sweet Dreams Fuel: "Angel", "Baby", "3.6.5.", and "Lucky", to name a few heartwarming ones.
Values Dissonance: Some fans believe that this may have been a factor in Kris filing a lawsuit towards SM. In North America, civil rights and artistic freedom are apparently more strongly emphasized than in Korea.