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.
Thats a very good and clear example. if 10 satoshis can offer a player 1 bet, you can see how satisfying this would make everyone. Having to try as much as you can. There are many who gamble for entertainment and committing little satoshis means nothing to them. It indeed makes gambling very affordable; thereby giving everybody the chance to be a player and one can decide trying for a number of times before winning.