I have noticed this problem myself. It is a relief in a way to know that this is not some oddity specific to AI art, nor is the commenting likely ongoing on on some other site I was not aware of.
One trick I use to come up with comments is interpreting what is going on, especially in ways that explain the oddities/errors in the generation (or even intentional oddities such as anthropology characters casually interacting in Cthulthu-esque surroundings).
Do I need to explain specifics or can peoole look up my posts via my profile for details?