Actually, noting the link I mentioned, if users just run the app on their own or visit via decentralized/IPFS web without directly editing the code, they are still using the censored/restricted/blocked codebase.
So it is necessary, that in the worst case scenario, the interface must be forked in order to remove the code that contains to blocks some specific countries or tokens.
Well, people aren't that tech-savvy or knowledgeable about crypto to set up their own node in order to use DEXs freely without restrictions. They will take the easier approach (which is using DEXs directly through third-party APIs) than all the other way around. It's a good thing DEXs are open source, or we would've been toast by now. Expect regulations to increase in order to prevent as much people as possible from gaining access to the world of crypto. The Russia "sanctions evasion", money laundering activities on the Blockchain, and the Terra/LUNA collapse will be the perfect excuse for governments to increase regulatory pressure.
At the core level, people will still get freedom thanks to the decentralized and censorship-resistant nature of crypto/Blockchain tech. But don't expect everything else to be the same (especially centralized exchanges) because of the reasons mentioned before. I have no problem with increasing regulations as long as decentralization wins in the long run. Just my thoughts