The idea that Privacy lovers can start using Dex exchanges more than any is highly possible but not all privacy coins will be delisted from Centralized exchanges, and again pray that this never happens, privacy coins are lagging presently and if eventually every single one of them get delisted from Centralized exchanges there will be problem, why? Dex has no good volume, bad experience overall, low Liquidity and Dex doesn't solve hacks
I see nothing wrong with delisting private coins from centralized exchanges. Any centralized exchange contradicts the ideology of private coins. I think it will be good if they are used for what they were created for - which means they will go past centralized exchanges and will be used directly by people.
That's true, but there aren't really that many people who transact between each other, so privacy orientated coins fits nicely on decentralized exchanges.