There are estimates that suggest up to 97% of Russia's operational military strength is currently in the Ukrainian theater. I find that hard to believe but there have been some weird instances of the kind of POWs the Ukrainian's have captured in recent weeks.
e.g. this:
Sailors being turned into infantrymen is not something a country that still has an overabundance of men chooses to do.
12K is around 6% of Google's workforce. Musk reduced Twitter's workforce from 7500 to 2300.
I'm pretty sure if Google fired over 69% of its workforce it would be getting more attention.