Hundreds of millions certainly seems like a stretch but dams displace people when there's suddenly a 300' lake in valleys where people lived.
Not sure of the specifics of this project but it's one of the major drawbacks of large scale hydro, it was a big problem with the TVA dams in America. Old crow medicine show has a song about it called "half mile down".
Obviously the bot won't reply to this but is there an easy way to post one of those links in the first place?