This is one of those things that always struck me as at least scam-adjacent. Even if there are legit cloud miners (and I'm sure there are), it's so easy for scammers to move in the space, and the privacy-focused nature of btc folks makes establishing trust super hard.

Also, it occurs to me that the "bitcoin is a ponzi scheme" folks might be accurate about these folks. Cloud mining seems custom-built for that kind of thing.