The dam was built to placate the Crimean Tatars, politically. Placating a minority.
Yeah. Sure. The tatar minority were such a power in 2015.
And the announced Kherson dam to basically block the Dnieper was just the cherry on the sundae.
http://eu.eot.su/2021/02/17/kiev-will-complete-a-dam-to-deprive-crimea-of-water/