You can tell what damage was done previously *sighs*… there are tons of videos and pictures of the dam… feel free to stay delusional further though 🤷♂️
and another delusion, is the two points at the end of your article… again I recommend you to check how it goes around Bakhmut, Pisky, Avdiivka, how Russian commanders are preserving their troops 🤷♂️
the simple reason, why Kherson defensive 8:1 number provided by UA MoD, might be little bit plausible, is that RU ended up in shambles and chaos after few months of daily care by Mr. HIMARS (20k+ soldiers under incompetent command is pretty target rich environment), which Russia was not able to counter at all, and they were still doing counterattacks around Snihurivka and Ternovy Pody all the time, until retreat… Also look at some numbers from the liberation of Balaklia, where due to chaos amongst the Russian soldiers and useless commanders, the presented numbers were 5:1 in favour for Ukraine as well. With much much much less HIMARS treatment…
The numbers for the whole Kharkiv offensive were not released yet though (AFAIK).
EDIT: just do the math. Someone made a statistics, how many HIMARS attacks have been done during that period… I do not remember exact number, but it was more than 300. Let’s split it evenly. 150 strikes against logistic infrastructure and 150 strikes against personnel HQs, with the reports from 20-300 killed personnel. But lets just use number 30, to be very conservative. That means minimum 4500 dead Russians by HIMARS alone, and 0 Ukrainian dead, due to lack of countermeasures, to destroy or even damage soldiers in use of this machinery… then look at artillery. Russia just shoots randomly and hope to hit something, there are videos on Telegram of Russian soldiers blaming their artillery support to shoot the projectiles up to few hundreds meters away from the targets, on the other hand, UA has Excaliburs, and they are using it with great success (again, you can see a lot of footage, with one hit kills of russian machinery), this speaks also in favour of better K:D ratio for Ukrainians. The only time, where the ratio is not in their favour, is their direct counter-offensive, which they dropped to absolute minimum in this region, in favour of the HIMARS pounding… all you need for this conclusion is some common sense, and some elementary school math 🤷♂️
and here you have some another backing of the common sense, for visually confirmed losses of machinery. During the counteroffensive, the ratio was 3.5:1 in favour for Ukraine *surprised pikachu face (or not)*. As you can see, the UA losses piled up a lot, just after the start of their counteroffensive in the middle of October, when they started to push more in Kherson Oblast, but they are still waaaay under the Russian losses… but yeah sure, do not let the numbers or common sense to disturb your ideology 🤷♂️