Yeah, Fisher getting iced by Itauma in the first is about as close as a sure thing as it gets in boxing. Johnny Fisher packs some very fine British china in that mandible.
Not only that he's not beyond toughman level skill wise. He's a very limited fragile fighter who was lucky to have a good promoter behind him. Seems like a decent guy out of the ring tbh but he's found his level in boxing. He's probably going to lose to some lesser journeyman before he can even be built back up to British title level again.