Above poster is just trying to clarify that "casualties" means "dead or injured". Generally many more are injured than killed in war, so the number of causualties will be higher than the number of deaths.
Conversely, the "loss of working age men" in both Ukraine and Russia is much higher than the death toll from the war for various reasons: poor demographics, emigration, disability, permanently increased standing army size, reduced health care quality, etc...
Conversely, the "loss of working age men" in both Ukraine and Russia is much higher than the death toll from the war for various reasons: poor demographics, emigration, disability, permanently increased standing army size, reduced health care quality, etc...