That’s just stupid. Are they really suggesting Ukraine should focus solely on grinding through fortified Russian defenses?

That's clearly a losing strategy, too, but the "we'll fight them to the last Ukranian" crowd is still too far from reality to admit it.

The best decision for the Ukranian people is to negotiate an end to the war as soon as possible, which means accepting that when you are losing a war the peace isn't going to involve crazy shit like getting more territory than you started with (Crimea). They've lost, and they can come to terms with it now or do so later after a bunch more Ukranians die only get a worse outcome.

The reason the Ukranian government isn't doing that is because their NATO puppetmasters don't give a shit about the casualties of their proxies -- they just want to bleed Russia as much as possible. So without the option to negotiate, and with the impossibility of winning on the main front, they have to try Hail Mary gambits like the Kursk invasion.