I don't think there is a problem with using AI to generate ideas, which I think is all anyone is really talking about, because I can't think of a single soul who would use any of the AI lyrics that I've seen generated without altering them significantly before trying to use them in any song.
You would just have to be really lame to use AI lyrics as they are.
Wow, you are an optimist.
I get dragged to open mics now and then. People are singing that crap.