I don't even know what point he's trying to make. This isn't 20D chess, it's very simple: Russia issued an ultimatum and if it isn't obeyed, Ukraine is going to get the snot beat out of it.
Well, your hypothesis is going to be tested soon. Let's see if Russia executes the invasion (because its '
ultimatum' isn't going to be '
obeyed.') In fact, officially, it's already been rejected. So if the invasion doesn't happen now, that means your hypothesis is incorrect and that it was never 'simple' at all.
I listed my reasons for skepticism (of the chances of invasion) many pages ago, but now we're arriving at the point of execution, as the winter eases up. We'll find out soon.
Either way, I think Russia's primary objective is to test NATO's cohesion while maintaining its gas supplies to Europe. And so far, NATO hasn't cracked. But that doesn't mean that the game is over, even if Russia backs off. Russia can keep up pressure and continue trying to break Germany away from the center. And if/when that happens, Ukraine becomes irrelevant. Russia can take Ukraine anytime it wants even now, but I don't think that's Russia's real objective. It wants to have its cake and eat it too i.e. taking Ukraine without the follow-on economic costs of losing the European market, while simultaneously removing a united NATO threat on its borders for good.