Not an expert programmer whatsoever, and it's been more than 15 years I've used Python for doing something GUI related (it was Python 2 and GTK+2...), but I do know you can do KDE stuff with Python right now. For example, there are Kirigami bindings for Python you can use to do a desktop/mobile app.
Still though I absolutely agree getting into C++ is a nightmare, to me is just a level behind Assembly and Brainfuck. I'd like to learn Rust and it'd be great to be able to contribute to KDE with it.
It worked! Thank you so much!