Lolol! The Russians are morons! That explains why they still launch satellites into space and how despite over two months of offenses by Ukraine in the South, the lines held.
But the Russians 'mined' the dam that would flood the entire region east of Kherson and cut off the main source of water to Crimea, something that they secured in the first weeks of the conflict and destroyed the dam which was built by Ukranazi in 2014 to block the water to the peninsula. Makes sense.