Exactly.AI can be quite good...depends on the amount of time and effort the human creator puts into it. A lot though is AI-SLOP.
I sent a DM to the author asking about process. I suspect he does a LOT more than feed it lyrics and stand back. My suspicion is that he's feeding it lyrics, score, and some singing; eg. if I was to sing something it would sound more or less like a human trying to sing. No one would confuse it with real singing, BUT I could see AI using that as a basis for conversion to real on-key singing.I've seen AI stuff that was actually good, and it turned out that person who used AI to make it also "tweaked" it after AI was done (in some cases extensively to such degree that you can call AI part of it sketch)