More than a 9/11 died from covid in the US every week and nobody gave a shit
Lots of people gave a shit. That's the whole reason we had quarantine for over a year.
I don't think it's unfair to say that the Russian government's hard fascist turn in the 90s, and it's decades of corrosive white nationalist domestic politics, has fucked with the heads of many of it's residents in a way the squishy libs in Europe and the US aren't able to conceptualize.
That's not a "calipers" situation. It's the end result of Shock Doctrine economics and attendant toxic culture war politics. And it's not contained to Russia by any means. You see this shit across Eastern Europe and the Middle East. As common in Riyadh and Cairo as Moscow and St. Petersburg.
But it does help to answer the question "Why do Russians seem to have an appetite for endless war that Euros/Americans lack?"