So why do centralized exchanges exist today, and by the way, are you using them? It is true that using centralized services to store bitcoins is not a good idea because we have abandoned banks for bitcoin also because we do not like centralization. But centralized exchanges and services still have a large number of customers using their services.
Centralized exchanges are there for you to trade your coins and not to store it, it is easy to understand this. After trading on centralized exchanges, the funds should be moved into your self custodial wallet, i know that there are a lot of people who still store their funds in exchanges, but they are doing it wrong and that is why they make up the victims of ftx, celsius, Genesis, 3AC, mt. Gox, etc, who are still waiting to recieve some portion of their money back. If people do not want to be a part of these victims, they should use self custodial wallets to store coins.