> If/when encrypted SNI is widely implemented, it might work.
No. China is already blocking all connections with encrypted SNI. If such services become popular or make the encrypted SNI mandatory, then the choice will be to either install a government MITM certificate or not use the internet at all.
My point is that right now Russia does not have to choose between blocking entire CDN or allowing all websites. Unencrypted SNI allows to selectively block some websites while keeping CDN for other websites untouched.
No. China is already blocking all connections with encrypted SNI. If such services become popular or make the encrypted SNI mandatory, then the choice will be to either install a government MITM certificate or not use the internet at all.