This article has no other reasoning for negotiated concessions becoming the more likely outcome other than, “winter is coming”. This is just a doom reader fluff piece.
Ukraine is losing less men in their counter offensive than when they were defending the front, are receiving more weaponry and ammunition than ever before, and have been training on western military hardware for months that is soon to hit the battlefield. Sure the winter is going to slow Ukrainian advance, but this isn’t the 1940’s. Artillery, air support, and mortars can all reach further than ever before with near pinpoint accuracy.