https://www.youtube.com/watch?v=QEjdiE0AoCU
From my perspective, AI generated music at the present often falls really short on two areas. The first is instrumentation and dynamics. AI music often sounds "robotic". Probably better soundsets for some AI examples would help, but beyond that, I find a lot of AI music "overly quantized" sounding. Humans often don't play the music exactly as written(see: https://en.wikipedia.org/wiki/Expressive_timing); this "non-perfect timing" is a large part of many music works' expressive element.
The second problem to me is that AI music often falls short on overall coherent musical themes. A lot of AI pieces tend to sound "structureless" with no real direction, no thematic elements, nothing that could be called a motif or hook, etc. There are definitely some established "rules and patterns" for music, so it's not like some of this could be fed into the AI. The best composers however bend and play with convention a bit, though.
I don't like the first one very much, it resembles me improvising some times; randomly repeating patterns without any direction or structure and without going anywhere.
The second one is better, it has some good moments, but still has the same problem, it lacks general structure, and just seems to go from pattern to pattern.
I like the third one, it may help that the form is very formulaic. Some rhythms that it makes are weird but in a good interesting way. The structure is better and seems to be going somewhere but unfortunately it doesn't finish.
EDIT: Conclusion, if the program could incorporate structure in some way it would make for passable music, but I would say the humans are still safe ;)