If you believe the Russian propaganda about what happened to their attack on Kiev, you aren't just willingly drinking their kool-aid, you're also demonstrating that your understanding of military strategy and tactics is not to the level where you can read the situation on the ground at all.
Marduk has touched on it already, but the crux is that the sheer amount and type of force Russia committed to the attack on Kiev demonstrates beyond any reasonable doubt that it was a serious offensive. And that's before you get into the matter of how taking Kiev, especially with the Ukrainian government still there, would have ended the war almost immediately, and let Russia summarily dictate terms.
Or how the Russians clearly thought resistance would fold like it did in Crimea in 2014.