No matter what you plan to do on centralised exchanges, do not trust them.
Actually, don't trust anyone or anything in the cryptocurrency world. We cannot trust some projects, exchanges both top, middle, or small, DEX or CEX. It means that whatever the condition, we must be careful in every crypto activity and business. But, we can take any advantages of the top exchanges, much better than small exchanges because small changes will die more easily than top exchanges. Taking profits from the exchanges by doing some trading activities may be usual and it is no problem and I will prefer to top exchanges. But, we cannot trust them 100%. Just be careful about what's going on in the crypto world.
people use centralized exchanges with good reputations for having high trading volumes. and it helps them to trade and earn profits.
it is undeniable that there are still traders or maybe holders who keep their money in the exchange. and of course, they must still know what the risks are. FTX has taught us a lesson. and all depends on the most convenient option that we can choose.