I would suspect AI images are supported, as in a PNG or JPEG sense.
As for encourage, well I personally am not a fan of, and wouldn’t encourage, displaying AI art in a gallery for artists that spend many hours honing their skills, and many more hours to produce their work.
An art gallery, such as the one here on CGCookie, I would hope, is for artist to display a masterpiece of their own creation.
AI art may have it’s place in the world, for quick production for an advertisement with a looming deadline for example, but artist galleries, I would suggest not.
I would love to here other peoples opinions on this topic, including the mighty boss cookie @wesburke
Thanks for asking the question @plasmavoyage. AI art, and AI in generally is a hot topic right now, and I expect some AI art may have already sneaked into the gallery.