Russia Ukraine war, page-235141

How does the Kursk incursion help Ukrainians?

I believe it does not. It does help to extend Russia's resources a little. But at what cost?

Ukrainians are exchanging territories that are heavily fortified and have been held for years for something that can be considered as empty fields, that are barely defendable.

If Ukrainians were not able to hold heavily fortified territories, territories that have been prepared to withstand mass assaults, how long do you think will they be able to hold onto territories that have barely any fortifications, no strategic or economic value?