Some folks who are neither prudish or humorless want to see the project and its contributors succeed to the degree that alternatives like Photopea has, or as Blender has in the 3D space. The project will continue to limp along until the name is changed to something without negative connotations in English-speaking populations.
Alternatively; fork the program yourself and change the name. It's not going to hit Blender levels of popularity overnight, but at least HN could sleep better knowing the name isn't an icky Folsom Street thing. It's getting tiring to open every GIMP changelog discussion and see people worried about Grandma's opinion on the software.
I agree, and to an extent laud it, but it also means keeping GIMP an old-school hacker project.
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).