Misaimed Fandom is when the audience takes irony as endorsement or likes a character the author meant to be problematic. The classic example is Milton: Satan is the bad guy of Paradise Lost. If you enjoyed Achievement Unlocked with no sense of irony, you were engaging in misaimed fandom.
The tropers note the characters of Rei and Kaworu Neon Genesis: Evangelion. They are pale, creepy, and emotionally stunted, and therefore not intended to be sympathetic, sexualized (Rules 34 and 36 aside), or fan favorites. The creators missed two things: (1) they are the nicest people in the series; (2) many otaku are pale, creepy, and emotionally stunted.
What examples would you cite as misaimed fandom in gaming? PETA’s Thanksgiving Cooking Mama parody was meant to make you sick, but children enjoyed its gooey, over-the-top violence. Other games have meant to sicken you with violence but instead provided hours of gore-soaked enjoyment for the masses. Hard moral choices lead to “hey, watch what I can do to this old lady” moments. Was You Have to Burn the Rope really meant as a Portal parody?