Yes, I believe it.
I got this gem a couple of days ago for pasting a speech bubble in with the words " you're bat- shit crazy:
"Your comment was deleted by a moderator because they believe it violated the Imgflip Terms of Use. Additional notes: Memes, comments, or other images whose sole purpose is to attack a person or group of people in a condemning and non-humorous way are subject to deletion"
Shit, that means the moderators need to delete more than half the memes and comments all over imgflip.