And here's the video of when they undermined and blew up the dam road among the panic of the retreat (in November 2022, extremely massive blast):

https://www.reddit.com/r/CombatFootage/comments/10s9lgg/attempted_destruction_of_nova_kakhovka_dam_by/

Which was the damage mentioned in your very own "And then there's this:" link that talked about how "Dam in Nova Kahovka cannot be opened due to damage" (1 month ago in May). I don't know why did you link it without reading, or how could you read it and fail to understand. Besides you being literally retarded which would explain everything.

And here's the earlier strike that I also mentioned (in August 2022):

https://www.reddit.com/r/CombatFootage/comments/wuavtb/footage_of_the_impact_of_ukrainian_himars/

I can find the "gory aftermath" I talked about too. I distinctively remember a Muscovites torso without any limbs and head due to having been in encased in body armour. The damage to the dam road itself was very limited compared to the later damage when Russia just BTFO it literally.

The danger of the damaged dam finally giving up was well known and widely reported recently. For example, last month:

https://www.nytimes.com/2023/05/17/world/europe/dam-flood-ukraine-kakhovka.html (https://archive.is/I6Giu)

Mentioning what I talked about too: "In August, a Ukrainian artillery strike targeted a bridge along the dam, though the dam avoided sustaining any damage. Then, in November, Russian forces deliberately destroyed part of the road directly above the dam’s gates, carrying out an explosion dangerously close to vital dam infrastructure."

"muh ecocide"

The Soviet building of the dam was already an envo disaster.

So in summary: They did blew it up, yes. But they did it so already over half year ago.