He’s literally made that up
Oh he has, definitely, but if you remove the exact timings then it's a pretty sensible and plausible strategy for the Russians based on their doctrines of war.
Control of the air and removal of command and control would have dramatically reduced the Ukranian's ability to defend ground and adapt to Russian attacks.
Missing urban areas and encircling troops is again a part of their typical principles of attack: fast-moving on multiple axis and adapting like on the open plains.
Also, after analysing what happened in Crimea etc., US experts came up with something called their New (4th) Generation Warfare (RNGW) doctrine.
A very simplified explanation of this is proxy wars and limited military actions to implement regime change rather than actual tactical victory in battle.
They're not succeeding at that yet nor are they really utilising the doctrine of superior, indirect fire support to supplement attacking on multiple axis to overwhelm.
Russia is successfully being sucked into a slow ground war against dogged and well-prepared defences, which is now moving into urban areas.
This goes against everything what they have planned for in the past 50 years.
@Mutzo Nutzo may no more, but their anti-radation arsenal was apparently dire.