Any further info on the nuclear reactor that may be affected by loss of water for cooling as the reservoir empties? This would be a very roundabout way of causing a nuclear disaster within a war region, if the reporter in the video is correct about the possible effects of the situation.

You shouldn't forget that this huge artificial lake had enormous value as water source for agriculture and this catastrophe will create colossal negative long-term effect on production of important Ukrainian agricultural products, including crops and sunflower oil, in which Ukraine was one of the greatest exporter in the world! Moreover, large area is flooded now and harvest is simply destroyed. It was also important water source for thousands of people and livestock. No mention its important role in cooling nuclear plant, which is now in great danger. So I honestly cannot see any benefits for Ukraine at all and even destroying some Russian positions near the river is not even comparable to such price!