Russia has allegedly lost two generals as well, one of whom was the Chief of Staff the army. I doubt they were seen as expendable.
https://www.theguardian.com/world/2022/mar/08/vitaly-gerasim...
https://www.theguardian.com/world/2022/mar/08/vitaly-gerasim...
Vitaly Gerasimov was the Chief of Staff of an army (41st Combined Arms), rather than the Army. The similarly-named Valery Gerasimov is the Chief of Staff of the Russian Armed Forces.
Anyone is expendable when you're a dictator.