Yeah they're way too wide and not muddy enough, if you're gonna be as wide as they often are you need to fill it, else they always just sound over produced/weirdly bright. I was thinking earlier about why they sound really good but not actually good and then I realized that's how I feel about most modern pop music anyway. I think the main thing you're hearing, or at least the thing I find annoying, is if you listen close to how the AI does harmony it seems to almost be cloning the original vocal line and pitching it up and out so it's slightly offset feeling giving the appearance of a second vocalist, its a tick I do in abelton to see what things might sound like build differently with vocals and it feels very much like the sumo fake backing singers. I do think they're like 6 months or so away from nailing a lot of this given how quickly they've been moving, I follow them closely and it's been impressive. (you can also pull meatier stuff out of it if you work it a bit: https://s.h4x.club/04uz6klg - don't think this sounds particularly "AI" at all - edit: turns out if you play up in chamber orchestra and choir in the prompting you can get some much better stuff out of it: https://s.h4x.club/eDubr9xJ)

I mean yes and no, like if you just let it generate lazily, then yes. However if you work on lyrics and generate a bunch of samples.. no it can be very powerful and artistic.