> If the biggest flaw of a OS is the border radius of its windows, you've got yourself a pretty decent OS!

This argument would also make Windows 11 a pretty decent OS by extension via "If the biggest flaw of a OS is the position of the start menu you've got yourself a pretty decent OS".

In general I could use any minor nuisance as a proof of decency - or inject some to form this argument on purpose as a manufacturer.

People don't like if their environment changes in minor unsolicited ways. There's always gonna be fuzz about these things and that means that the fuzz itself can't be used to make any strong argument whatsoever.

I think people are more complaining about windows crashing on updates or Microsoft putting ads everywhere or forcing one drive

That’s way more than just the “position of the start menu”