Well that's 0 for 3 then. Linux has always exhibited this 'problem.' Windows is effectively at parity with Linux now, and you point out the increasing divergence of even macOS.

What shall we conclude from all of this? I propose that simultaneously expecting a) an operating system to host a limitless diversity of graphical applications with origins that transcend platforms, programming paradigms and decades and b) that they all precisely align with your chosen operating systems ever changing GUI conventions and c) all of this be delivered at at least affordable if not no cost -- is simply unreasonable.

I suppose you could argue having a common style between macOS and iOS is more consistent. I'm still undecided about the new style in Big Sur. On the other hand I spend a lot of time in Windows and find the whole UI grating.