It's not just your use of the word "GIMP" that offends people, it's also the lengths you will go to deny it's offensive and instead lay the blame on your users and supporters themselves, for being narrow minded and easily offended. And also your Machiavellian approach of redefining the meaning of a word to be all about your own project and nothing else, then calling on your users and evangelists to do the Sisyphean task of re-educating the public, commercial and educational institutions that the well known historical dictionary and pop-culture definitions of "gimp" no longer apply. I'm not making this stuff up:
"Basically our approach is to redefine what "Gimp" means. ... If it is a problem in your local area (some areas in the US typically) that is unfortunate, but we need to rely on your powers to explain that we're helping in getting rid of the derogatory interpretation of the term "Gimp"." -Simon Budig, GIMP developer, April 11 2015, http://www.gimpusers.com/forums/gimp-developer/17151-gimp-in...
Year after year, many people give you feedback explaining why it's a problem. Time and again, you deny it, happily marginalize and ignore them, and try to turn it around by accusing those people -- YOUR USERS AND SUPPORTERS -- of being "narrow minded", which insults them and drives them away:
"I seriously doubt that the name is effectively keeping GIMP from being used. And I am all happy to ignore the very few people who are so narrow-minded as to having a problem with the name." -Sven Neumann, GIMP developer, December 12 2004, http://www.mail-archive.com/gimp-developer%40lists.xcf.berke...
I am trying to make the world a better place, by giving you honest feedback like you requested, with numerous citations and quotes of your leaders and users, and asking you to please consider not using such an offensive term, and not accusing your own users of being narrow minded and easily offended, because not only is it sabotaging the potential success of your own project in particular, but it's also an embarrassment to the open source community in general:
"Is there any thought on salvaging the marketing effort and renaming this product so that it can be taken seriously by people and institutions? Also, a big barrier to entry adopting Linux for people is a solid graphic manipulator. The bad branding is causing many people in my art communities around Austin to avoid Linux in general." -Sam Bagot, GIMP user and supporter, April 8 2015, http://www.gimpusers.com/forums/gimp-developer/17151-gimp-in...
I'm afraid you still don't get it. We have no purpose to offend anyone. All the offense is self-inflicted.
I wish you spent this much time on making the world a better place to live in.