Many gamblers use bitcoin because their countries banned gambling and their are also countries that limit the amount gambled. Rich people travel overseas and there are some that use crypto currencies specifically bitcoin. Speaking about the present dump on bitcoin prices obviously affect these gamblers. Take for instance a gambler's 1 million dollars is now worth only $700,000. No one will be happy on this devaluation of assets. Except for gamblers that also believe in bitcoin and its long term potential.
Long-time gamblers already know how to deal with this bearish situation. The price of Bitcoin might affect them especially if they're big-time players but for sure, they already know what to do and handle the volatility of the market. Some gamblers prefer holding during their Bitcoin during the bearish market and just gamble when the market recovers. Their strategies depend on their purpose in having Bitcoin whether to hold it or spend it on gambling.