My questions are serious, but everything about this screams -EV so posting here.

Someone sent me a video of some kid playing blackjack online for essentially 100's of thousands.
https://www.youtube.com/watch?v=scM_tmTohis

He is playing online, but it looks like it is dealt by a real dealer.
I guess a couple questions I have are:
Are these live dealer/online games legit (are they countable?)
Does anyone know who this kid is?
It don't make sense, he is playing ultra high stakes, but apparently has no concept of playing the game profitably.
Just confused how he can be gambling for these amounts and not even at least be playing BS.