Many of us had to use bitcoin for gambling by necessity.
Not being able to KYC, having no bank account, sites not accepting your country.

All valid reasons to not be able to use a site using FIAT. Not everyone gambling with bitcoin always was a believer in the project.
The issue is that volatility would not be a good feature for those casual players.

So stable coins are a valid alternative. You get to play with minimal exposure to price risks. It just made crypto gambling more accessible.