[Retric]

It’s the same premise as rooftop solar. You’re building a home anyway so adding solar panels to the roof isn’t destroying pristine habitat.

People build dams for many reasons not just electricity.

Having a reserve of rainwater is a big deal in California, Texas, etc. Letting millions of cubic meters more water flow into the ocean would make the water problems much worse in much of the world. Flood control is similarly a serious concern. Blaming 100% of the issues from dams on Hydropower is silly if outlawing hydropower isn’t going to remove those dams.