It’s deeply concerning that there are people in democratic countries willing to promote the ultra-nationalist Russian narrative that NATO expansion is to blame for Russian aggression

I hope Said and I are not being counted among these people.
NATO told Russia they won't accept applications from its neighbors. They broke that promise.
Yes Jim, it is entirely reasonable for the small former Warsaw Pact countries to apply to join NATO.
It was for NATO to reject them - if NATO could put Ukraine in limbo, why not these countries? Maybe they could have worked out a milder pact than the NATO pact with Article 5. Like US did with Taiwan. Ambiguous support.
Maybe it meant throwing these Eastern European countries to the wolves (or to the Bear), tough. Don't be a small country near Russia.
But it looks like NATO did want to take on Russia. Western countries feeling their oats again after the Soviet Union collapsed. So here we are.

As for Americans invading Canada, or Greenland, or Panama for that matter; I have a few doubts. I think (I don't know) that it will materialize just like the border wall paid for by Mexico was constructed in the first term.