It doesn't. Mostly. It's like this - court precedent can't be a source of law in Russia, but Supreme Court's interpretations of contentious stuff are effectively mandatory, because lower courts have to keep in mind they can end up being overruled if they make a ruling that goes against those interpretations. And the Supreme Court ends up dealing with contentious stuff when it's brought before the Supreme Court. So the Supreme Court can kinda set precedents. But not the other courts. Not even kinda.

It is a social precedent though. Not sure what kind. I'm leaning towards bad as being anti-war right now isn't a great way to earn support in Russia. So entangling the word "communist" with that isn't great.