It's true that not being listed on huge CEX is big factor for the price of the gambling tokens and the only gambling that I know that listed on Binance was FUN token which experienced mega pump the rime it was listed on Binance few years ago. Most of the new casino tokens still doesn't experienced this kind of pump since big CEX has a strict requirements on losting tokens that related on gambling which FUN token dodge since ot was listed on Binance before they updatethere requirements.
It is not because they have updated the requirements that it will be impossible to get listed there; it will take more work and effort for the team. All new tokens that get listed on Binance, always experience a massive pump (and also dump) when they get listed.