I don't really disagree with what you're saying, but I have a point we should agree on. Your previous discussion point spoke to ethics or morality, to "rules" even between enemies. Your current rebuttal is instead one of pragmatism.

I agree it may not be pragmatic to respond fully to Russia as would be entirely just. The Nuremburg trials were entirely just (at least in my view), but nobody doubts there are hundreds of rulers that get handshakes instead of a death conviction based entirely on the unreasonable cost, paid by innocents, of doing the right thing.

The rules at this point suggest Putin should have been stripped of all power and prosecuted by Ukraine. Military conquest is simply unacceptable on the world stage, and that does (or should) apply to all governments at this point. But rules are often only followed when possible and best for everyone