This feels much better than the Russian government's approach to censorship and modern tech. The problem is that there are people in Russian government who actually have a clue about how this stuff works.

If the blocking is done client-side, there's plenty of ways to bypass it, like just not updating your browser, duh. Or patching it, or installing extensions that neutralize the blocking mechanism, or fooling it into thinking you're in another country. Even if the blocking done via DNS, it's trivially bypassable by using a DNS provider that offers encryption. Russian approach, though, is to use deep packet inspection equipment (that doesn't implement the TCP spec, lol) to actively mess with people's connections to "forbidden" resources.