Why doesn't it make sense? I'm not for Russia nor for NATO, but what is the purpose of the alliance if not against Russia as a remnant of the cold war?
Wasn't the same kind of reasoning used by the USA for Cuba resulting in its ~blockade~ "quarantine" and almost war/invasion?
It seems to me there's a certain rhetoric meant to cast Putin as a crazy warmongering dictator who foolishly wishes to revive the Soviet Union. In part this may be true, but it seems to me that these arguments are meant to distract our gaze away from the US (and NATO in extension) as the global superpower it is, how historically it has moved against the USSR and Russia and its part in the world stage.
*Obviously Putin/Russia is to blame for invading Ukraine.
edit: Adding a few words because I think I have not been clear. I'm not arguing for Russia or against NATO. I'm arguing that from Putin's perspective it makes sense; an alliance historically against the USSR, now expanding near Russia's borders can be seen as a potential threat.
The rhetoric is "I was watering my garden and some crazy guy attacked me", but that is removing the context. And that context exists even if you believe that NATO=good & Russia=bad.