Real question: do you know how to describe a picture in a way that would be useful to humans but not as much to an AI? You can be sure that all those nicely labeled pictures are used to train AI models, and I would like to avoid diversion of a disabled-oriented feature for AI benefits if possible.
The best thing to do is to use glaze or nightshade on any images you put online, which either makes them useless to AI or actively messes up their systems.