You started it though by retranslating BBC's speculations but back down when merits of blowing up dam are questioned.
"I think there is no a proper time to blow the dam just like I think the whole russian aggression ‘was’ and ‘is’ pointless to begin with. "
No intention to argue with that, but the dam is blown anyway and somebody did blow it up.
It may be blown by Russia, but again it may be not.
Take the NordStream comedy -- many actors, starting from Kiev, were trying to blame Russia for the explosions and inventing bizarre reasons for that and look at the headlines now -- 'U.S. had intelligence of detailed Ukrainian plan to attack Nord Stream pipeline' [0].
So who should I talk to about reasons for Russia to blow up NordStream?
[0] https://www.washingtonpost.com/national-security/2023/06/06/...