I had hoped that everyone actually watched that initial Ritter interview; I think I linked it here with timestamps before.
Anyways, I know the typical cast of characters that you would expect have been really worried about civilian deaths and Putin's (still as of yet unrecorded!) war crimes, so check out a minute or two starting at about 43:18 of this initial Scott Ritter video:
SCOTT RITTER MILITARY INTELLIGENCE EXPERT ON UKRAINE CONFLICT - YouTube
If our latest kook sainame actually thinks tens of thousands of Ukrainian civs are dead, and Putin is pursuing actual traditional war approaches, with the 1:1 Military Match calculation there should be tens of thousands of dead Russian soldiers to match those civilians.