It just shows how desperate they are. Their entire pre-war military is either KIA or POW
Their pre-war military was never any good to begin with. Before 2014 it was the corrupt and decaying remains of what had existed in Soviet Union times. It was poorly funded, badly equipped and barely capable of anything.
After 2014, there was a degree of material aid from outside, but the fighting of the Donbas war tended to lower standards within the army down to irregular militia level. Training ceased, standards dropped and most of the officers produced by Ukraine in the last ten years could only function at small unit level with little to no coordination. Its still today an army of small detachments.
As that sort of army, they can do ok on the defensive. Then can put small units into trench positions - tell him to stay there - and they will generally give an OK account of themselves.
But try to put them on the offensive and they are completely lost. They send wave after wave of men and equipment at fixed positions without any particular strategy or coordination. See Robotyne. See Krinky.
After the early phase of the war, Ukraine needed about 18 months to construct a new set of army units behind the lines to higher standards of training. But rather than do that, they send units that were mostly raw conscripts to NATO for a few weeks training and then sent them off into a major offensive against very strong fixed defensive positions.
The 2023 counteroffensive did more than just fail. It destroyed all of their reserves and any ability to rotate units out and any ability to raise standards of units through training.
They deserve credit for not collapsing in 2022 as a military. But like everything else in the Ukrainian State, the basic structure of their military is rotten and barely functional. And they proved incapable of fixing their problems because neither they nor their sponsors in the west were willing to tell the truth about the state of the military either to the world or themselves. The 2023 counteroffensive was completely about putting on a show for the western media rather than doing something that made military sense.