I see where you're coming from. It's like tolerating the intolerant. There is a point where Ukraine needs to choose between total destruction by Russia, or doing whatever it takes to get their land and people back.
It's not like Russia is held accountable for war crimes. Why would we be so critical of Ukraine when no one is doing anything to stop the atrocities of Putin?
I don't happily endorse the thermite drones, but you won't find me playing judge on what Ukraine is doing. They didn't start this war.
I have some questions you might ask yourself:
What is the count of those vs. the number of surrendered Russians being treated well?
Which one is more likely to be in the news?
Which one is more likely to be spread around by Russian bots?
Which will be more likely to be suppressed?