>

Can anyone tell me who counts these kills, and how? Legitimate question.
Puts my Spotify Wrapped to shame.
Ukrainian Defenders have killed about 100,950 Russian occupiers and destroyed over 3,000 Russian tanks, about 6,000 armoured combat vehicles and about 1,700 drones as of 23 December. >

I’m pretty sure I read that that 100,000 figure is casualties, not exclusively deaths.  It’s deaths and wounded to a point where they can’t return to action (someone correct me if I’m off here).
But it’s not 100,000 + killed. >

Ukaine's 100,000 claims are for KIA only. The US's 100,000+ claims are for all casualties (KIA, WIA, MIA, POW, etc). >

Yeap. And historically Ukraine has actually been closer to reality and the US has played it very conservative. 
Around a month into the war, Ukraine was saying 20k Russians killed, and the US was saying it was likely 10-12k Russians killed. A Russian news stationed leaked (accidentally or intentionally) the exact number of Russian deaths and it was around the 18k killed mark. 
I don't know how well that has aged, or if it has been leaked since, but that was like April time frame. But to me it showed that Ukraine's estimates are actually closer (but still over exaggerated) then America's very conservative numbers. Can't fault either party for their number bias. >

Wow. Over 100,000 Russian combat deaths so far since February. For comparison, the US had 58,000 combat deaths during the entire Vietnam War. How are the Russian People not completely rebelling at this point?! >

for another comparison. the battle of Somme saw 1.6 million casualties in 6 months >

That’s a staggering number.  Yeesh. >

For context, the British Army alone sustained 57,470 casualties which included 19,240 fatalities on the first day of the Somme offensive. >

These number are just insane to think about. Like how do you even get rid of 20000 bodies in one day. They probably simply didn't >

I imagine they couldn't for a while, they'd be sitting ducks trying to remove that many >

They didn't, generally. In some cases, an informal truce was formed across the lines in order for them to bury the dead, but in most cases they just ended up where they fell.
There are stories of soldiers literally coming across old corpses when digging new trenches and I imagine many of the dead were literally disintegrated by the artillery barrages in no man's land.