I'm attempting to align so that we can move our discussion forward. I'm just going to assume that you agree with the following statement.
The Ukrainian government is more accountable to it’s population than the Russian government.
Both democracies and authoritarian regimes have drafts. The difference is that democracies can not continue an unpopular draft because the government will be voted out.
The more accountable a government is to their population, the less that government can afford to enact unpopular policies.
You seem hung up on the fact that Ukraine has a draft. What's actually important is, does Ukraine have a draft that is supported by the population? If lots of drafted individuals become casualties then the Ukrainian government risks losing the support of the population and being replaced.
This is less of an issue for authoritarian regimes. That is my point and that is a major reason the Ukrainian government values it's manpower more than the Russian government, there are larger consequences for casualties.