That is pretty much what I was thinking but it's interesting to have it from a source that actually knows what they are talking about! haha. I think the plan was to go into Ukraine in Trump's second term, it's possible Putin even waited for the election to be over to go in. Without the US, NATO has no teeth and Trump already disintegrated the NATO alliance. So when Trump lost, I'm sure Putin was incensed. He was probably getting the same propaganda a lot of Americans were getting saying Trump would win in a landslide. So now Putin has to decide if he can take advantage of a sleepy Biden. I think Putin had no dreams of how quickly NATO snapped to attention when Biden called. It's actually unprecedented to have all those countries in lockstep even in the face of economic disasters on fuel costs.
So it's pretty clear Putin made a huge miscalculation going into Ukraine. A month ago, Putin would have chuckled (does he laugh?) if you told him he would be fighting for his own political life. But that's where we are and he is acting more and more unhinged. So, this gets more and more dangerous.