The Russians have always been extremely touchy about what they consider to be attempts to destabilize Orthodoxy and that includes being hostile to Catholicism but this headline is way overblown.
The measure is aimed at keeping Islam in check and if it also makes life difficult for proselytizing American congregationalists, that's a two-fer for them.
This is not the return of the Soviet Union.
Merely an assumption on your part.
That says it all, really.
Yes, it does say a lot, but not what you apparently think it does.