Interesting, though. I had heard talks about introducing proper government-level filtering -- I think after the Telegram/AWS/etc blocks in, like, 2018 (?), but I wasn't aware of anything actually going into effect.
If you've got time to answer or link me anything, I am a little curious. How are the TSPU boxes setup? Are these provided by the government to different datacenters/IXs or at some sort of higher level than that? And are they currently just used to filter additional out-of-registry domains/IP addresses or do they also filter the semi-public, known blacklist? Is there anything like the unofficial Chinese gfwlist that tries to maintain a list of the out-of-registry stuff?
I haven't lived in Russia in a little while now, but when I was last there, although virtually every residential ISP enforced the government list, a number of the domestic server providers weren't, so a good option for low-latency and keeping a Russian IP address was just renting a gigabit VPS from the city next to me and using it as a proxy server.