Impressive text. Smart or copy-paste?
I know all that, which is why I said you have to be careful, like with any infrastructure.
In some well developed countries experts are employed to calculate the effects of different types of builds - dams, bridges, piers, high rise buildings etc, and to find solutions to avoid the negative effects - maybe even have positive effects.
This problem is not specific to renewable energy - same goes for irrigation or transport on waterways, canals, straightening streams etc.
A good example of a well handled build is the bridge connecting Denmark with Sweden.
Denmark also places a lot of wind mills out to sea, again taking currents and habitats into consideration, and actually improving wild life by creating more habitats around the base of the mills.
Negative cases outnumber the good ones worldwide. Some countries don´t give a shit about environment or local populations - like China.
But consider the alternatives: Coal and Oil