Over the now 15 months of war, Ukraine has fought and lost four major urban battles against Russia, suffering progressively worse levels of casualties in each: Severodonetsk, Lysychansk, Soledar, and most recently Bakhmut.

I guess Mariupol isn't major..

I do like some of their points though:

As a result, Ukraine has lost literally tens of thousands of killed and wounded, along with enormous quantities of equipment and ammunition, in those four city fights. Based on a likely fire superiority of 10-to-1 on the Russian side, Ukraine no doubt suffered considerably more casualties in those fights than the Russians. But even if the cost were equal, Russia has millions more men from whom to draw more fighters and a major domestic industrial capacity to produce all the ammunition they may require.

Put simply, Ukraine doesn’t have the personnel or industrial capacity to replace their lost men and equipment in comparison to the Russians. Moreover, Russia has been learning from its many tactical mistakes and evidence suggests they are improving tactically while simultaneously expanding their industrial capacity. Even bigger than the dearth of ammunition and equipment for Ukraine, however, is the number of trained and experienced personnel they’ve lost. Many of those skilled troops and leaders simply cannot be replaced in the span of mere months.

With each escalation Kivv gives even more legitimacy to be erased from the map, now with the Belgorod games they most certainly lost Kharkov.