[1]: Whereas analysis based on what Russia was actually doing was largely correct before the war. This is why there was such a large chasm between what the US was saying then- based on their ability to hack Kadryov's phones and hear what was being said at those levels, along with their satellites to observe what the actual Russian army was doing- and what the French and Germans were saying based largely on 'that would be a dumb thing for Putin to do'.
It is now known that Putin's decision to invade was due to bad intel from his intelligence services that reported that Ukraine would not be able to mount significant resistance. In that light it was reasonably self-interest-pursuant.
Acting on incorrect information is not the same as being irrational.