The comic is based on nothing except someone being enthusiastic about AI and how he uses it for slop and imagining that he is somehow in the same boat as reputable medical researchers when people hate his slop output. He is not basing it on any actual results or backlash to results, just resentment over slop being disliked and trying to strawman up a sympathetic 'victim' for anti-slop sentiment.
I won't rule out GenAI as being somehow used, but most of what I've heard of has been 'other' AI techniques. GenAI might facilitate some scenarios I don't know, but either way the guy who slopped up a comic has zero in common with the imagined researchers in his comic. While there may be skepticism or accusations of stealing work (like the Math situation), I don't think the public at large would be eager to reject a medical breakthrough that is valid just because GenAI had a hand it it.