Watso on the contrary, the town was never a strategic victory, but what it has been is a way of reducing Russian forces in the meat grinder while they prepare for the counter offensive. Some are estimating 100,000 dead Russians in that town alone.
If you come across an ex top brass of Nato forces called Ben Hodges he's worth a listen. He's been pretty spot on so far about the war and how it will run. He's also very bullish that Ukraine can prevail late this year which will include getting back Crimea.