I agree that Paul is not a real pro fighter, but this fixing stuff is genuinely just cope. He was just exploiting people who could be used to hype up the match without being serious opponents (at that time, in boxing specifically)

Paul has unlimited money and time for fitness, personal trainers, coaches, facilities, medical care, etc. He has no talent but he has the brute force of wealth and youth and that’s enough to crush surgically selected opponents even if he could never be a pro (and he could never be a pro).