I kept a small amount of Bitcoin on Betfury and earned some decent rewards — their staking rate is quite attractive. It’s a nice way to get passive income if you're already using the platform. However, I strongly recommend not keeping large amounts there. Centralized platforms always carry risks, and your funds are not fully under your control. Use it wisely, and always store the majority of your crypto in your own private wallet to stay safe.
As for Betfury, they have a pretty reliable platform, even for long-term staking. Personally, I don't ever remember BFG holders having any unpleasant surprises during the whole Betfury existence.
Nevertheless, you are right that holding large funds on any centralized platform is not a good idea. Only that which you wouldn't be sorry to lose.