> In particular, finding your long-term partner can be a huge struggle in a big city in times of Tinder where nobody is committed anymore
You're projecting here -- the article never mentioned anything related to a partner. Also, wait what? COMPETITION for a spouse? If you look at your desired gender that way, I think it might actually do you good to live as a nomad for a while.
"Nobody is committed anymore" -- change your social circles. Go attend local events related to your work and hobby. Go hold a lecture somewhere and have drinks with a few of the studens.
You can do a heckload of things to change your environment even without moving away from the city. You sound bitter, you need to work on some change in your life.