I agree with the comment, this feels very yucky to me to use AI, especially with a theme and a medium like this one. As an illustrator myself TTRPG is such a nice space where handmade illustration is still needed and valued, please don't let that change.
Plus the ecological + social cost and issues with AI are really... yeah, something.
I fully understand that paying an illustrator may be too much (even if it may be pretty cheap for one illustration), especially since your game is non-commercial.
Photobashing, using and modifying archive photos, doing a shitty drawing is infinitely more human and anticapitalist than using AI.
I get your point about not biasing toward a particular movement, but i think we should not erase the previous fights (especially not with AI). There was a lot of unafiliated protest, strikes and revolts.
Anyway sorry if this is a little harsh but I got your game with the Trans bundle and was as excited to play it as I was disappointed to see the AI picture