You mean Crimea? While it was a hostile act indeed, it was different. Might be less visible from the outside, again.

Lemme try to explain the difference. Again, no justification, I don’t have a strong stance on Crimea, just how it looks from inside Russia (and Crimea - having lots of relatives and friends from there and been there pre- and post-annexation).

The annexation of Crimea was relatively peaceful (while some Russian soldiers came to the peninsula, it wasn’t a full-scale invasion, no bullet was shot and no bullet was meant to be shot) and went in accordance to the interest of locals, who wholeheartedly overwhelmingly approved the change - and I’m not just sourcing this from Kremlin propaganda and referendum results, I’ve been on the ground and have many contacts in there. The sentiment has somewhat changed over time, but is still moderately pro-Russia. Crimea is also primarily inhabited by ethnic Russians - 67,9% Russians with only 15,7% Ukrainians by the time of annexation in 2014 - which might help to explain such a fierce support (source: Wikipedia). Putin has also taken action against growing conflict between Russians and Crimean Tatars, which, while being heavily controversial, got him even more support from the Russian population majority.

The 2022 invasion was meant from the start as a full-scale war, and was meant to meet resistance and be hostile to the civilian population. Unlike annexation of Crimea, which was more of a political recoloring than anything, this time it was an actual war, with blood, bullets, and flame, and with Russian tanks riding through Ukrainian protesters that wished those tanks to go away. And this is the kind of scenario Russians could not envision. In Russian mentality, Ukrainians, just like Belorussians, are brotherly folks, and going for the kill means betraying the almost sacred bond the nations have. This shows in Russian politics, with leaders constantly trying to tell population it is not a war against brotherly Ukrainians, but rather against Nazis and their leader Zelensky (yep, the guy with Jewish bloodline). But it is bullshit that the majority can still see through, and when the war started, it was a giant shock and, like, something that absolutely, under any circumstances, shouldn’t have happened.

This, exactly, has blinded Russians, myself included, into trusting Kremlin with their “combat exercise” rhetoric. Not that we had (and have) big trust in our government, but going to a real bloody war with Ukraine was too unthinkable to ever seriously consider.

Also, please avoid rhetorical questions in favor of direct ones. I do answer this one because it might be useful for the general context, but it is rude and also ineffective in case you actually want to hear an answer.