You'd have to file them, which is not free. However, the point is moot. As someone pointed out above, putting AI-generated stuff out in public probably doesn't concern patents in any way.
That's not at all clear. No one has ruled AI generated information is not prior art. After all, lots of things that are not patents (like 1950s Soviet space films, in the famous SpaceX/Blue Origin lawsuit) are prior art.
