How do I politely tell people that they need hobbies that don't involve the internet or activism?
Start a garden. Get into birdwatching. Join a diamond painting group. Join a book club. Learn how to embroider. Take a pottery class.
Just. Anything that doesn't involve constant arguments about theory and praxis. Interact with people who are outside of your immediate friend group. Shove your hands into some dirt. Create something just for yourself.