I'm still waiting for a truly cross-platform framework using Python that builds natively and beautifully on ANY platform - from the Apple IIGS to MacOS M4 to web to Windows to Linux. With a click of a button. So I wasn't pleased to read how limited this framework is. Still waiting, I guess?
There are some things available, and people are working on it. Coincidentally, one of those people is Russell Keith-Magee of Django fame, who founded the BeeWare project.