There's no way about this. The sanctions are a very obvious and predictable counter measure. We don't know for a fact if Putin has prepared for them or not, but the idea he hasn't is quite ludicrously stupid and based on no evidence other than the desire to believe he's just randomly gone nuts.
It's not really comparable to the scenarios you've mentioned with are ground based strategies and subject to unpredictable outcomes. The difference between inaccurately predicting your forces can defeat a legion of enemy tanks, and being so dumb as to just expect your enemy wouldn't possibly bother to use their tanks in the first place. The former is a strategic mistake, the latter requires you to be an utterly insane moron.
They have enough fuel they just can't get it to their tanks quickly enough. Again this is just an example of how things never go to plan in a war.
If you me and half this thread seems to know what the sanctions imply, how do you figure that everyone in Russia would be too stupid to figure it out.
I mean come on now