Russia seems to have a lot of problems blocking Tor if it's so trivial to block their obfuscation methods.

If no cross-border traffic is allowed at all, that's where reticulum comes in. Radio doesn't respect borders, and if you want to kill the ability to use any kind of radio communications to get out of the country, then you have to jam the entire radio spectrum as well as the light spectrum to avoid using point-to-point laser communications.