It's risky, but they haven't let us down so far... As Dwyane wrote, it's risky to hold funds on any centralized platform, but many people do it. We choose to trust the platform with our money, and in my opinion (and experience) one of the most important rules (in gambling, trading, investing...) is to hold (stake) only amounts we can afford to lose. There are many nice & trustworthy places in the crypto space, if we wish to have a full experience and try "things" we need to accept some risks.
As a gambler, I don't have a problem with that. Sometimes the risk pays off, sometimes it doesn't... that's life.
That's true, even if we say that staking or letting your funds stay in centralized platforms like betfury, people still do it because of their trust. While the risk really pays off for those that are willing to take.
Those that can't do much should just stick to their plans and get out of it if they're not willing to lose that amount that they're about to stake or invest.
Bankroll casinos used to be great as well in the past but I don't see much people talk about it anymore, it's sort of the counterpart of staking.