Hard to tell where he is at really. He certainly hasn't lived the life so that is going to catch up sooner or later and he hasn't been fleet of foot since the Wilder trilogy started and perhaps maybe not even since the Wladamir fight which was almost 10 years ago. It's a shame he bottled the rematch as I think a fully focused Wladamir beats him. He was having success towards the end but it was a little too late. If I remember correctly, his wife was going through a miscarriage shortly before that fight.
Since the Wilder 2 (?) fight and he teamed up with Sugar Hill, he has started sitting on his punches a bit more but he doesn't move the same way he did. There's a reason plenty of people think he has lost his legs and it wouldn't be surprising with how he goes up and down in weight. Since the Wilder fights, who has he fought? Whyte, Chisora and Ngannou. Hardly stellar competition or people you would need to dance around Whyte has always had terrible feet and walks like Frankenstein (though credit where credit is due. I thought he'd put up a bit of a fight but his chin is shot to smithereens) Chisora he already comprehensively beat twice and Francis? well, less said the better.
The Usyk fight is going to be very interesting. If he was struggling with a career cruiserweight when he was fast for a big man, how is he going to deal with an ATG cruiserweight in Usyk when he isn't as fast now? If he can't use his weight to his advantage and lean on Usyk all night I can see him getting dropped a few times and losing on points.