Maybe you should lookup when these damns were built. I wouldn't be surprised if in 1970 there were also 9 countries who didn't use any FFs. Same 9 countries of course. If you can build hydro you do. Problem is, we already have them everywhere they can be. And even now, hydro is only about 10% of all electric power production worldwide.

Great Ethiopian Renaissance Dam opened in 2023 seemingly beginning construction when Egypt was at its weakest post Arab Spring [0].

[0] Ethiopia outfoxes Egypt over the Nile's waters with its mighty dam, https://www.bbc.com/news/articles/cz71zndj001o (2025).