I don’t think the problem is resolvable to everyone’s satisfaction, which speaks to the poor decision to make the windows that shape in the first place.

I’m not sure who (outside of Apple, and perhaps even inside seeing as Alan Dye quit) is satisfied with the extreme round corners we have now. No one asked for that, and it doesn’t provide a single benefit.

It's easily resolvable - you just need to allow custom forms, then every user can pick one of the 3 most popular forms or tweak them to his unique preferences. Of course, this should also be true for window shape so you can remove the rounded corners

No, it cannot. But it does not have to be a moment of horror when you realize you might have to resize a window.