Wrong. For people who disabled Cortana, it kept re-enabling itself automatically after updates. I think that problem is mostly gone now, but it was definitely an issue all the way up till earlier this year.
> Disk fragmentation hasn't been an issue
The article has one tiny line-item about fragmentation and it was about architecture. I agree that it's not an issue for most people, but OP is making a comment about a design problem. You are mis-representing the argument by talking past it.
> I like UAC
That's a personal preference, and that's fine. I have mixed feelings about UAC.
> Windows (10) has arguably the best plug-and-play driver support
Again you might be talking past the issue. When Windows 10 first came out there were a TON of devices, including very popular printers and scanners, which had no support. It was a huge problem as the large number of news articles on the subject would indicate. It's mostly a non-issue now, but there are some devices that are still not supported. I consult for a cancer treatment facility and they have some not-terribly-obscure equipment that still doesn't have Windows 10 support. I agree that things have changed, but when the author wrote this, it was true. He should probably update the site.
> The article claims that it's difficult to figure out why your startup is so slow
The tool you mention is typical Microsoft. It blames the 3rd party and doesn't provide any info on Microsoft-internals stuff, which is where the problem is most of the time.
> The article claims that you can't disable Windows Store apps, Windows tips, and ads in the start menu. That's untrue
To the best of my knowledge, it's impossible to get a start menu without all the tips and ads without using a 3rd party Windows-10-decrapifyer/debloater kind of thing. And if that wasn't bad enough: https://mspoweruser.com/ads-in-windows-10-mail-and-calendar-... https://tech.slashdot.org/story/19/12/17/2249238/microsoft-s...