CEXs are the only gateways between the crypto and Fiat worlds, so don't expect them to disappear anytime soon. As you've stated before, it's always important to "never keep all of your eggs in one basket". You'd minimize risks of loss if one exchange goes all the way down the drain in an instant. Leaving only a small amount of coins for trading purposes would help you protect against undesired events. If you're keen on trading large amounts of crypto, DEXs and P2P trading platforms would be the way to go.
People need to be properly educated to help avoid getting into another disaster caused by mainstream crypto exchanges. What matters is that crypto stays decentralized so it could stand the test of time. I'm confident crypto will live alongside Fiat currencies for generations.

And can you name the top decentralized crypto? At least 3 points. As I know that all top coins are centralized and can be tracked. And only privacy coins let you remain more or less anonymous. And top privacy coin is only Monero.