Hunter's right... how the fukk are Bad Bunny, McAfee and Logan Paul so good? I think it's dedication. Their work ethic is uncanny.
I think it's a combination of a lot of things:
1.- The business being "exposed" and fans knowing that what these people do in the ring is hard as fukk. A celebrity that has been following wrestling before is much more knowledgeable about what wrestling is all about.
2.- Social media has created a lot of self awareness so a celebrity that follows wrestling understands that if they don't want to get clowned by the same circle/bubble they are a part of (wrestling fandom), they have to put their work in.
3.- Some celebrities don't give a fukk about 1 & 2. Others do care but just can't do the physical part of the job so they get more limited roles (like Snoop). And recently, WWE has hit the jackpot finding incredibly popular people that are willing to put the work and either realize their dream (Bad Bunny, pre full time contract Ronda Rousey, Pat) or just be good at it and show off on social media and get a good check (Logan Paul).
4.- For almost a decade now, WWE has let their talent do almost whatever the hell they want in the ring -that doesn't involve blood- so both the company and the fans are used to seeing a lot of spectacular high flying and big spots. That makes it "easier" for these capable celebrities to come in and do spots that are impressive for non-wreslting people, but it's not some ground breaking, never seen before, stuff that will "expose the business" or "take the spot from someone else".