it's safe, but you have to be more thorough...I think the security of this big exchange is pretty strong like Binance, Coinbase, Kucoin and a few more. but if your tokens are in large amounts above $ 4k you should use a personal wallet, to be more vigilant.
Generally speaking, it all depends on how the management is doing things with the exchange. Like Binance, they had been hacked for millions but the management made it a point not to allow anyone to lose any coins or tokens. Now, we also have to do our own part in making sure that our accounts can't be accessed by anyone unauthorized.