In terms of the right of ownership of your funds, DEX is the way to go, but when it comes to the overall experience, CEX is the way to go, which is why people are choosing CEX, especially for trading and business transactions. So, people will never stop using CEX, no matter what you tell them.

However, they are more at fault as they increased the risk by going for lower-ranked exchanges. Bigger exchanges will be able to absorb unforeseen circumstances like this, but smaller ones may not.