You need to have some huge ass balls to be doing 50$ spins...
Usually these players are sponsored by the casino. Especially if there happens to be a "replay" available, signalling that the play was recorded (which isn't done for no reason).
The real question.
42 Million USDT, It's a big money. My only thinking, If these happening since it's from the progressive jackpot (It's the money paid by the provider and sent to the user at that casino) or if the fund for payment it's from the casino it self.
As a normal user, I believe the user are gonna need passed fully verification maybe Level 3 or maximum Level 4. Also, people are gonna to think do the casino have a bankroll to pay that amount + It's actually have some transaction proof the casino pay these and user make some withdraw.
That's was most question and mystery from other user, while we are get these from online gambling.
That is the real question.
The casino being in touch with the provider, the provider paying the $42m or the casino having $42m on hand and happily paying it out, it's all very unlikely to naturally happen in a week of time...let alone, like you said, the stringent KYC a real winner would go through for much less.
I think that it's more probable that the casino, the provider and the player are in cahoots, than this player genuinely having been spinning with their own money and winning this amount. It's in the provider's interest to pay a fake winner than a real one. It's in the casino's interest for advertising like we see now. It's in the player's interest since they probably got a wad of cash to play until hitting the jackpot...that is, if the player isn't the casino itself.
Conspiracy? Yes. We can't prove these things. However even looking at the OP, the coincidental recording of the happening, the logic of real logistics, it validates the opinion's validity.