OP is not deflecting criticisms of Russia, OP is pointing out that the claim that NC is taking a principled stance is blatantly false. Obviously NC can still choose to proceed since they believe that this is a net benefit, but they cannot claim it is a principled stance.
[0] https://en.wiktionary.org/wiki/whataboutism
> And perfect consistency is the enemy of improving short-term outcomes.
Sure, I can agree with that point. But everyone can agree that pointing out inconsistency is definitionally not whataboutism.
I don't really know how to address the meat of your point, in that I think OP's point is a perfectly legitimate one and you don't, and I think it is unlikely that I would ever be able to convince you (and you will certainly never be able to convince me).
Address it, don't dismiss it.