> It feels like this has been completely lost, even on platforms like mac where consistency used to be important.

There are two kinds of consistency: across apps within a platform and across platforms within the same app. As someone who uses multiple platforms regularly, I have forever been annoyed when eg keyboard shortcuts change when I switch to a different computer, especially when I’m using the same app.

Apps like Discord, Spotify and VSCode are consistently the most pleasurable to use because they are largely the same.

For a unique piece of hardware like the old iPod, it made more sense to do your special custom UX as a unified product. But we’re talking about general purpose computers. The ”platform” shouldn’t be special imo, it should simply be predictable and stay out of the way. They mostly provide the same thing, like copy paste and maximizing a window, yet have different controls. This differentiation adds no value, at least to me.