If crypto becomes extremely popular in the future (widely adopted by a vast majority of people worldwide), it's probable governments will turn against it. They can pressure centralized exchanges to close up shop or face serious consequences in the long run. After all, these exchanges are the on and off ramps from the crypto world to the Fiat world. While not every country is against crypto, they might change their stance once they see Russia using it as a means to avoid sanctions.
Imagine if most countries unilaterally agree on banning centralized exchanges for good. Will that mean the end of crypto for good (even though it would still be possible to get some crypto through decentralized exchanges)? After all, most people will be afraid of using crypto if it's declared "illegal". The ban of centralized exchanges will surely topple crypto prices, signaling fear among investors and traders alike.
What are your thoughts?

If that happens that means all exchange that will be being use would be DEX only, is that what your trying to emphasize dude?
Well, in that case for me it is a good news to all crypto enthusiast, KYC will no longer require for sure, due to it is DEX platform.
But in reality I think it is not possible in my own opinion.