Is there a military reason behind the Nova Kakhovka disaster?

I look at the destruction of the Nova Kakhovka dam and discuss what military advantage it can give Russia. Frankly it is hard to see any military benefit, so perhaps it was about something else.
0:00 Intro
1:06 PRAM
1:35 The Nova Kakhovka Dam
3:02 The damage
3:38 Consequences of destruction
5:02 Emergency response
5:39 How will the situation develop?
7:06 Short-term military benefits for Russia
7:58 Long-term military disadvantages for Russia
8:50 Possible explanations
10:09 Stupid military decision
10:51 A mistake or incompetence?