Earlier quoted context omitted.
Even if that were true (it’s not - high collateral damage is not the same as not making a distinction), that doesn’t justify us deciding to also treat Russian civilians as military.
Putting pressure on Russian citizens motivates them to protest and take action inside of their country. The Ukrainians didn't have a choice either. I'd much rather have the US heavily-handededly knock down the Russian economy than the alternative of involving itself militarily.
People might say: look how West is behaving, when America invaded other countries or when NATO bombed Yugoslavia no one sanctioned them, but they are doing it to us, they hate us
At the end of the day Ukraine will be in ruins, so sanctions don't help