I thought that this was a quite interesting video. Not a military expert, but here are my takeaways.
1. A major Russian weakness was lack of men.
In 1:48, the officer analyses the Russian BTG (battle tactical group) and states, "The biggest problem was the lack of infantry."
This accords with what a blogger named Anatoly Karlin said, in which he argued that the initial plan's greatest flaw was lack of troops. He claimed that only 30K troops attacked Kiev, comparing this to 1.5 German divisions attacking a major Soviet city in WWII.
The video offers this graph.
View attachment 105266
I don't know whether or not this graph is accurate.
Still, I think it's clear that during the spring and summer of 2022 - Russian troop levels were stagnant or decreasing. However, Ukrainian troop levels consistently increased due to mobilisation. This resulted in the successful Kharkov offensive.
It's also interesting that the first Russian success since the summer (in Soledar) came shortly after Russia regained its manpower advantage.
Russian will probably need another mobilisation this spring?
2. At one point, Russia successfully countered HIMARS.
According to the officer, Russia initially defeated HIMARS through its PANTSIR system.
He then claims that after America provided the AGM-88 HARM missile, HIMARS succeeded.
I believe the first claim; a NATO officer admitting failure of an American system comes off as credible. This goes against the convention that HIMARS instantly changed the war.
3. Ukraine used "hydrotechnical warfare" (dam-blowing) effectively.
Ukraine successfully slowed and stopped Russian advances by flooding towns (such as Irpin) after blowing up dams.
Taiwan
which I guess could be used the same way. I think the PLA should blow these up in the initial bombing campaign before any land assault (and then wait for the water to dry). Flooding Taiwanese cities before any landing would also damage Taiwanese army preparations. Based on my observations of the PLA, I'm a bit skeptical that this would actually happen (meaning that the Taiwanese would blow up their dams in the middle of any land battle, substantially delaying any Chinese advance).
4. He subtly made fun of British intelligence updates propaganda.
I enjoyed this part of the video.
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Russian deep strikes "failed to have a meaningful impact on the conflict" all the way until they destroyed Ukraine's electricity grid.