Edit: actually not good. Disinformation agencies will still have access, so hexbear and .lm will remain. Only citizens will be punished and will be cut from non-prpaganda sources.
The majority of the people in those instances are probably not working with the state, they're just what the Soviet Union used to refer to as "useful idiots". So they would indeed be blocked if Hexbear and lemmy.ml are hosted in Russia.