Most casino gambling sites have applied bets using bitcoin and of course this service is connected to the internet network. there may already be a number of casino gambling venues that can accept bets using bitcoin directly and of course casinos must provide bitcoin properties like existing casino gambling games, because after all bets using bitcoin must be connected to an internet connection.
Given that it requires an internet connection but he's not directing to the online crypto casinos that are obviously accepting bitcoin. He's asking into those casinos that are established locally that are accepting bitcoin.
Like, you can gamble with their slots machine with bitcoin. I haven't seen the process but as been said, this is happening in Las Vegas and probably somewhere else.