I mean, if your argument is that sanctions never work and are useless, then that's a position that we can argue, but I guess that means you also would support lifting all sanctions against Russia, Iran, Afghanistan, etc?
How have they shown that? I think they've showed that they won't stop the war, but that's not at all the same as anticipating or countering the sanctions. Since they couldn't anticipate the war lasting longer than a week I think we can safely say they didn't anticipate having an ongoing war AND sanctions.