I suspect that the potential earnings from selling digital access to older editions on D&D beyond are less than the cost of the customer confusion it would create. If we do ever see WotC making a digital platform for older D&D versions, it's going to be on a separate website.
Having AI summaries is going to be better than having no summaries, if nobody can be bothered to write them. Then again, players who are lazy probably won't bother reading any summaries in the first place, regardless of where they come from. ;)
I had to explicitly prompt for "a female demon with the lower body of a snake, the upper body of a woman and 6 arms" Just asking for "a Marilith" gave me a woman with blue skin, pointy horns and ears and spiky armor, so the model does appear to have a vague idea that a Marilith is a female...
I've gotten decent results by starting with a screen clip from google maps with roughly the right layout I want for a battlemap, and then prompting the AI to style it.
I do miss a good adventure path. I'm not particularly interested in adventure anthologies - I can write short adventures myself, and they play better than purchased adventures since mine will be tailored for our campaign and characters.
But adventure paths provide a different style of game...