@anna
I always wondered where the Spanish open source is. Or French. I fail to believe everyone writes English FOSS.
And I am really sure it is me who fails here, I am sure those communities exist :) (NB: I did not search too much)
And here in Germany I see different stuff from young folks. Preference for nodejs and other stuff. Other things they deem important/interesting.
I recall many young folks from 3d printing 10 years ago. So I feel it is just "other" projects that they focus on.