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.
Yes, many people still prefer to use centralized platforms because these platforms can be more intuitive and user-friendly in terms of usage compared to decentralized services. However, decentralization in one form or another adds credibility to the platform. In the case of Betfury, it makes sense since their team is anonymous, and we don't know anything about them for so many years.
Decentralized platforms are also subject to risks, including hacker attacks and theft of funds through vulnerabilities in smart contracts. This makes them not always a reliable means of storage. It is important to carefully assess all risks before using any platform, whether centralized or decentralized.