In the fog of war, all bets are off.
Apparently, we do not have the evidence of who actually blew the dam, because we do not have the conditions required to gain sufficiently suitable evidence. Perhaps one day we will, but sufficient doubt exists that we cannot make canonical conclusions.
Yet.
The best we can do is use conjecture and assumptions - but in the court of world opinion, this just simply isn't enough. It is the same situation behind the destruction of the Nordstream 2 pipeline or the Duma gas attacks - we can make assumptions, and conjecture, over who did it and how and for what purpose - but until there is actionable evidence, its simply not enough to make conclusions based on ones own political position.
Such is the nature of Lady Liberty - she is blind in the face of verifiable evidence - and this is a core Western Value which shall not be abrogated, for any reason - especially in the face of oppression, where she is needed most.