Are Ukrainian General is even on record as publicly stating that the Ukrainians had considered taking this action before.
Strictly speaking they were on the record that they investigated if it was possible to damage the dam enough to frustrate Russian activity WITHOUT FLOODING TOWNS AND VILLAGES.
A well placed attack on the roadway could’ve done that without breaching the dam. Besides, that was over six months ago. If it had been this destructive we’d have seen the dam breach a lot sooner, and with deterioration on the exterior.
The explosion footage that I’ve seen suggests to me that this wasn’t a surface attack. I know that some reports say the HEP explosion was from inside the complex, not the outside.
Doesn’t prove who did it, but does undermine speculation that a HIMARS / drone did it.