I think one of the big advantages for crypto casinos are that they offer games with a much lower minimum bet, betting with one satoshi or the smallest micro unit of a cheaper crypto currency, makes betting on online casinos affordable for everyone.
I don't see that as an advantage since casinos are anyway affordable for pretty much anyone these days. Also the winnings are a lot smaller if your bet is only 1 satoshi and that's why almost no one plays on that small amount. Good thing about this is that you could win a jackpot with only 1 satoshi bets so for those who are lucky this is an advantage
Have you been to a real casino recently? You can't gamble with a penny. Maybe you can on some slots.
However if you want to play a game like Poker, Roulette, Blackjack they all got min bet amounts. So basically if you go to a casino with $5 you won't stay there too long.
With most crypto casinos you can bet with like 10 satoshi or so, some even offer 1 satoshi bets. Actually some even let you bet with 0 Satoshi.
So his point is correct that it makes gambling more affordable since the limits are much much lower.