That is somehow true. Gamblers will try new casinos, but they will only spend small amount of funds just to try out.
Or the worst, gamblers won't spend at all thru deposits since not wise to spend some fees for small amounts.
What they will ask is free coins or play money to test the platform. But if able to survive, establishing good and positive reviews, then a great milestone to them. And since they support several coins, they will able to gather more users in the future.