I think my favorite accusation of playing "wrong" was someone upset about my character name as it related to my powerset. It was funny enough I still remember it.
Character was a mind/ empathy controller. I wanted a pure support character, which my D&D group called "cheerleaders" because they sit on the sidelines and watch while the action takes place. So, I made the character a high school cheerleader in her costume and bio and called her "Spirit Girl".
Got a blind invite to a group, no questions about my powers, and we set off. I did my "cheering"... sleeps, holds, and healing, letting the jocks in the group show off their muscles (i.e., I left damage dealing to the damage dealers). I thought we were doing fine, and everybody got to show off what they did best. Then I got kicked from the group.
Apparently, according to the group leader, I was not only playing wrong but being outright deceitful by having a name with "Spirit" in it when I wasn't an Illusion controller.