That's probably true. But offending people with prudish attitudes or without a sense of humor is a pretty common old-school hacker goal.

It serves a valuable community function by protecting the community from corporate interests, non-technical bike-shedding, and overload by "bug" reports that are actually just the user not being technical enough to use the tool properly.

Edit: Also FWIW, I've had no problem introducing GIMP to church groups and in various professional settings.

Double edit: since you mention schools, I should also add that I taught my wife GIMP and she had no problem sharing it in her school (US public high school).