I don’t think most people will be able to tell if a lyric was generated by AI or not.
But they will be able to tell if a lyric speaks to them or not. And so far AI can’t get anywhere near that. And it won’t. AI can handle paint by numbers, and certainly paint by numbers music can make a bunch of money before it disappears down the memory hole. But the big stuff, the stuff people still care about 30, 40, 50 years later, the stuff that gets handed down from generation to generation. That ain’t paint by numbers.