With the German border maybe 10 minutes to the east of me, I can open that website just fine. Seems like an exclusively German problem, not a European one.
I don't think foreign propaganda was ever exempt from freedom of speech here in Europe (except the countries and regimes which lacked free speech, of course), it just wasn't much of a problem before the internet made opinions so easy to broadcast.
Unfortunately EU is now developing practice of extrajudicial sanctions on EU and national level, targeting both media and individuals expressing points of views alternative to position of Brussels or Berlin. Vance was surprisingly right back then in Munich.
It’s not just Russian propaganda, but now it is conveniently used as a blanket cover to sanction even EU citizens (see case of German journalist Hüseyin Doğru, whose only connection to Russia was a hosting of his pro-Palestinian outlet on a platform affiliated with RT).