I think it depends on which way we look at it, we all agree it was clearly a mistake by the dealer the question is whether it was intentionally to cheat players or just a technical error/human error if we consider it to be cheating then we have to consider the bet amount because it doesn't make sense for them to risk their reputation for just $22 and also risks losing users, if it is a technical error then the dealer must get a warning from the provider because it can give rise to negative assumptions. By the way, the dealer and everything in the studio does not belong to stake.com they only rent from third parties so Stake cannot take action against the dealer however Stake may submit a complaint.
It is probably a human error, no one will stake his job to cheat for only $22 and the video is cut so we don't clearly see what happens. Is the dealer new to the job? It looks like he was confused about the distribution of cards and how on earth one of the players already got 4 cards while the others are only getting their third card. And I think the dealer will be fired after the video went viral. Whether it was intentional or not, the dealer made a mistake big-time and got caught in a recording camera.