As far as I can tell, every major version of GTK should be thought of as an entirely separate project, and nothing in GTK 4 made GTK 3 or GTK 2 harder to use.
Please link me to the python3 gtk2 library so that I can migrate all my python2 gtk2 software to python3 without rewriting the entire UI. Thanks in advance!
what does make GTK2 harder to use is that it is not supported anymore. you can't build or run GKT2 based apps on new systems without building the GTK2 libraries yourself.