Unfortunately, it's probably a matter of time until this system is activated for real and the Iron Curtain drops to the floor. Then Putin will find some way to blame the West and rally against us.
For countries like Russia, the goal isn't necessarily to cut off all connections, the goal is to discourage it, make it expensive, annoying, slow, so that a large majority of the population will opt to use the Russian internet.
I don't they'll hesitate to do it if they see the need to. Putin wants the Soviet times back at any cost. He has many strings he can pull if he feels threatened.
According to a Russian resident I follow on social media, over the last 2 years Russians improved their localized circuses: VK, mail.ru, etc. The guy says these are now somewhat close to the originals i.e. Facebook, Instagram, YouTube.
Internet/media has a very long tail, which Russia can't hope to replace.
but then Russia would have a hard time making their hacking. lol.