His boxing prowess would be plenty for UFC. He is an Olympic medalist. You are tried to the highest level to make it there. Nobody in UFC HW division will want to trade with him. Not a soul. UFC fighters often lack sound boxing fundamentals, and no fault to them, they aren't boxers. However, they do like to slug, and Wilder would be king of that. I think he'd be right at home taking mouth pieces.
If they want to beat him they'll have to go low. Have to take the contest to the mat.
Tyson doesn't care about mma. Joshua I think is coachable yes. However, I still stand with the logic that Ngannou came out of virtually no where and took the division by force, punching force. If he can be coached to the highest level in the division and destroy people getting there, then come on. Let's be realistic.