I think it might actually be a little of both.
Tipping or not tipping, some of Victor's antics are a little much when we're talking about a casino dealer who is just doing his or her job and has to be there. If there was a person, who was not a Youtuber, doing the same...I wouldn't be shocked if a supervisor, or perhaps security, were to politely tell the person that they need to chill the fuck out a little bit. If anything bothers me at all about his whining, it's that the dealer has to listen to it.
He can say whatever the fuck he wants to a slot machine. I might even do a $1 super chat (in the highly unlikely event that I'm watching) if he incorporates, "Whore of Babylon," (a personal favorite of mine) into the rant.