Right. It's indeed worth pointing out that while this certainly looks like Russian terrorism, it's really fairly bad terrorism, all things considered, and not particularly hard or expensive to mitigate.
It's basically a "Putin tax" on the industrial democracies in the reason. I don't see how this helps Russia at all, honestly. Putin has a real shot, given the state of US politics, at salvaging something approximating a "victory" in Ukraine and getting back to peacetime economics. Why rock the boat?