Maybe for those who have been playing crypto gambling for a long time it has no effect on them, and I’m sure they won’t be bothered either because they know that kind of move in this industry. And then if anyone will be affected by this sudden fall in the price of bitcoin, it is none other than those who are new to this industry and do not yet have enough knowledge of cryptocurrency. What they can do right away is to release their gambling winnings immediately because they will think that Bitcoin will continue to collapse, which is not really going to happen.
you are right, those who want exposure to crypto price won't care that much and maybe lower price will even incentive them to buy more (and maybe gamble more)
while those who don't care about crypto will just sell for stablecoins and call it a day