None of your comebacks are things that are show stoppers.
Apple music loads when you plug in headphones? Is that the same as your laptop doesn't suspend and resume at all?
The taskbar has things you don't like in it? Is that the same as "the UI for most apps are show stopper broken"?
If I fix the icons in my dock, they stay fixed. If I fix something in Linux, someone is going to come along and break it next time I patch something.
See the difference? I like the mac as an access device for power tools BECAUSE the kind of folks who like messing with computers aren't messing with mine.
And most of what you mention in the last paragraph needs to be prefaced with "if you don't mind burning 4x more battery on doing it without acceleration", and "if you don't mind it looking like a small child chose your fonts".
It's not enough for it to be kinda usable if you squint, it needs to use the hardware I paid for, it needs to suspend and resume and boot securely, it needs to look good, display in the colors I want on the display hardware I choose, and let me remap the keyboard without using 10 apps to cover all the weird edge cases.
That's table stakes.