>for the life of my I can't understand why y'all care so much about this.

Because we fucking have to see it every day. And the sloppiness compounds and is indicative of further rot.

Of course the different radii also means different code paths were used, which points to a mess of APIs and frameworks underneath too.

And that's before we add the usability issues (like hard to read labels due to the glass effect and such, or bizare dragging boundaries, etc).

>Doesn't that seem a bit... particular?

Good software is about being particular.

If we wanted any random crap, we'd use any random crap.