After the whole issues of FTX my advice is though buying from CEX is safer but storing all your funds there should be avoided and for holders just stick with DEX.
There are a lot of issues with CEX, this is why you need to choose the best option and never hold any crypto with CEX, you have to learn from what happen to many exchanges. I still not suggest to hold on DEX, better if you are planning for long term holding do it on your hard wallet, it is more safe and you have the control over your crypto. CEX is good for liquidity and trading, maximize that option and be wise.