I dont buy that anymore. We had that "escalation" yell at every stage, every new tech. Tanks, jets, everytime ukraine got help, the "moscow puppets" yelled about nuclear war and escalation. I m of the opinion we could have stopped 4 years of butchery if we had supported Ukraine decisevly from the start. The words of the peaceniks just dont hold value anymore. They lack predictive power so significantly those utterances seem delusional at time. Quite frankly if sb marches into a peaceful neighbor country, they dont get to call for the referee the moment they kick the shit out of them.
I basically agree and think it's a great shame that the US didn't say don't invade Ukraine or we'll have the USAF bomb the invading troops. Russia couldn't reasonably use nukes just because they were being stopped invading a country that they'd signed an agreement not to invade when Ukraine gave up its nukes. Many thousands or lives would have been saved.