Disgusted? Ukraine are at a very disadvantageous position, being attacked from all directions by a superior ( on paper) military force. Their only hope of winning ( or at least making the Russians lose) is to keep morale high, and have the majority of the population fight and resist actively the invasion. Purely militarily they're screwed, but if their population resists, the Russians have no chance of establishing control. Morale is vital. That's why Zelensky is staying in Kyiv, with grave risk for his life, to keep the spirits up.

With all that in mind, Ukraine needs every possible win it can get on the PR front. Kindergarten bombed? Kharkiv city center shelled indiscriminately? Video of random civilians on a road being obliterated by a missile? They need to tell everyone all of that, so that Ukrainians keep on fighting, and so the world keeps supporting them so there's weapons to fight with. National legends, feel good stories about superhuman successes by legendary men better than us is classic. If they exaggerate or invent some feel good/positive things, it doesn't matter. They're at a war they cannot win on military terms. The ends ( surviving) justifies the means.