Is it logical?
No.
While I don't support harassing ordinary Russians, there is a huge difference between someone being oppressed and unable to elect their government, and someone who openly and deliberately supports Putin's fascist Z-regime, such as yourself. It's funny how Putinists adopted the "cancel culture" meme, which is really a snowflake's way of saying "why can't I make everyone shut up and not point out all the false shit I'm peddling".
I am not so selfish as to ask the West for any preferences for myself. But what the hell is Gagarin guilty of, that they are trying to erase him from history as the first man in space? Or is it Tchaikovsky's fault that his works are removed from the repertoire of European orchestras? Or what is the fault of the ethnic Germans from Kazakhstan, who emigrated a long time ago to Germany and are now being accused of being allegedly Russian? It really comes to such an absurdity.
Anyone who supports Putin's terrorist regime should be considered investigated to see if they provide material support to terrorists.
Supporting war crimes and ethnic cleansing is not exactly kosher in Germany, so they might get arrested.
German citizens can protest as long as they don't break any laws in Germany. I am not sure if support for the Soviet Union or Communism is
allowed in Germany. In the former Communist countries, they would arrest your ass in a New York minute.
Does it make sense morally? Of course not.