If I am one of the Bitcoin fanatic or Holder, of course there is an impact. If the price got dumped, I would rather to use Bitcoin in any of the games in the gambling site, whether it is slots games, dice, crash, poker and more as long as I have a chance to earn Bitcoin, because once there is a big accumulation I did, in short there is also a big profit I could get when the bitcoin bull run will be happen in the market.
Indeed there will be opportunities to get big profits from using bitcoin, i.e. when you can win a lot of satoshi and when the price of those bitcoins rises high so you will get big profits. But keep in mind that when the price of bitcoin goes down, it means the fiat balance in your account also decreases and when you gamble with bitcoin, you also put up more satoshi to gamble. But as a holder, of course, it's not a problem because a holder must have more bitcoins than other gamblers.