I'm not aware of any credible experts making this argument, nor does this argument make any sense under even minimal scrutiny. The reality is that a dictatorial regime in Ukraine that cancelled elections and banned opposition parties along with independent media, is holding the country hostage.

Of course, party extremists also used extreme violence to prevent civilian retreat, but I’ve seen no evidence of this in Ukraine.

Aside from all the videos of people being grabbed off the street and being gang pressed into fighting you mean. It's so bad that even western media is reporting on it https://www.irishtimes.com/world/europe/2023/12/17/people-snatchers-ukraines-army-recruiters-use-harsh-tactics-to-fill-ranks-for-war-against-russia/

Governments will take any action they deem necessary to survive a conflict. Both parties in a conflict can be immoral.

Both parties can be immoral, except in this particular case it's very clear that western backed fascist regime is the only immoral party.