I used some tech from the 200 B.C. yesterday when I used scissors to cut some cardboard. I really don't see why a technology's age has anything to do with how good or bad it is to use.

In a world where PyQt is a thing, Tkinter is not even worth learning.

The problem is that packaging a PyQt project is too difficult.

PyQt is GPL/commercial. That’s one big honking reason it can’t be used for a lot of projects.

PySide is more permissive though (LGPL).