On whatever platform. Requiring a user to download and install a 100MB+ framework just to show a basic GUI is just ridiculous. Even Sublime is 33 MB and I see that as bloated, and that's including its separate copy of Python itself...
Maybe it's because PyQt is a lot more than just a basic GUI[0].
> PyQt is one of the most popular Python bindings for the Qt cross-platform C++ framework.
And why are you comparing an editor to a GUI framework? Or is there a GUI framework also called Sublime?
Also the difference between 60MB and 100MB isn't huge, so using the word ridiculous is IMO a bit over-dramatic.