If the gambling sites depend on the value of the cryptocurrency then, it has a big impact on gamblers. But, I think that gambling sites use cryptocurrency which is not converted to USD since we all know that market is very volatile it can go up and down.
I think that much more on the personality. Remember that some gamblers used USD of fiat money to bet but others may used crypto to bet in the betting platform. You can't deny the fact that if gamblers itself who will be determining which value that will be used to gamble whether it will peg with fiar or crypto. In this case the site can't be blamed once crypto gamblers loosing their money
Those who are usually use crypto gambling site definitely realize the issue. There are some gamblers prefer to use stable coins and some other gambling on Bitcoin or Altcoins. To avoid the volatility of this cryptocurrency, gamblers must stabilize their assets or gamble with little risk. I think generally gamblers are ignore the normal volatility to continuing gambling with out any interruption.
Most of the time, Gamblers that still using Bitcoin and other altcoins instead of stablecoins during bear market are those using there investment on gambling. They don’t want to loss there position on the coins they are holding and at the same time they are risking there coins on gambling for a chance to increase there holdings. Whales that use Bitcoin all the time on gambling choose it as there investment that’s why they don’t to convert on stablecoin and missed out the price pump while there funds is still on gambling wallet.