I don't understand how this isn't an all hands on deck emergency for the EU (and for everyone else).

The EU as an institution doesn't understand the concept of "emergency". And quite a number of national governments have already been captured by various pro-Russian elements.

Russian bots, as opposed to American bots, the latter of which are, of course, the good guys /s

I think you are bit outdated now. Those are same bots.

This sort of thing: https://www.dw.com/en/russian-disinformation-aims-to-manipul...

There does not appear to be a comparable operation by the US to plant entirely fake stores. Unless you count Truth Social, I suppose.