Regarding FAA from a few pages back, I don't know what's wrong with him - I know he's struggled with an injury and there's probably something mental going on. Sort of a lost year, really. But I suspect he'll bounce back.
I do think that if he was going to become an ATG we would have seen it already - even by last year. I mean, he's already 23, which should be well within his peak range. And this isn't slam-less Ivan Lendl at 23. By his 23rd birthday in March of 1983, Lendl had 33 titles to his name, including four Masters, two Tour Finals an an Alt Final (Dallas WCT). With Borg retired, he was one of the three best players on tour - probably having surpassed Connors for 2nd best by then. FAA isn't close to that league. This doesn't mean he doesn't have big titles or even a Slam or two in his future; who knows, though I'd be surprised if he doesn't win at least a Masters or two. But the ship has sailed on his greatness, imo - and that was clear a year ago or so, when he didn't build on his breakout 2021.
I see more of a Tsonga-type (or a later blooming Tsitsipas), but with more opportunities ahead of him, due to the absence of the Big Three. But I think that Alcaraz and Rune, and probably Sinner--and maybe younger guys like Fils--will all have significantly better careers.