Look, all the examples I listed above, I am using them all. Every day. I speak from personal experience when I vouch for the Apple ecosystem working very well for me, so yes, I am amused when people try to blatantly tell me straight to my face that I am wrong.
I take exception to "you simply can't get with a mish-mash of hardware and software." That's way too general.
The stuff you listed I can do with BT, OneDrive, My Surface Pro4 plus their are a variety of great third party tools that probably sync better than anything apl has. I was listening to a podcast today where the apl pundit said flat out he could not trust Mac photo library it destroyed his data twice.
I get the feeling out there is apl is somehow superior by apl , that's fine but don't discount other solutions.
Most do without watches that need a daily charge