You value the User Experience.
It just so happens to be much better when the company who makes the OS also takes more responsibility for how the hardware and software are supposed to work together.
And yet the post you quoted pretty much proved that is not nearly always the case. I felt Windows 98 provided a good user experience (in fact, if it was still supported today, I'd still be using it). And yet the hardware was made by a totally different company from the software.
In other words, it's a load of rubbish. Yes, if the software doesn't suit the hardware then the user experience tends to be rubbish. However, long gone are the days of missing drivers that result in faulty software and weird bugs. Especially in mobile phones.