They explicitly listed the reasons they think it's awful. My personal grievances with Windows align more or less with theirs and while I wouldn't go as far as to say it's awful, I'd use something certainly stronger than "annoyance".
Specifically, clear anti-user choices that exceed by far being "annoying":
* Making it exceedingly difficult or impossible to use the OS without logging in with a Microsoft account.
* Forcing the user in various ways to surrender data to Microsoft. Some of them can be disabled if you really go out of your way, others can't.
* Prompting me again and again to switch to Edge and other MS defaults. I've had the same install for a few years now and NO, I don't want to change to "Microsoft recommended defaults", no matter how many times you ask me.
* Showing the same "OS setup" screen after some updates, requiring me to pay very close attention to what I'm clicking, lest I select something MS is trying to lead me to. The amount of attention required from the user on those screens corresponds quite well with anti-user behavior.
>Making it exceedingly difficult or impossible to use the OS without logging in with a Microsoft account
This is hilarious. I recently got a new laptop that has window$ 11. After setting it up with a Non Microsoft email (which required some good fight), I tries to install some random app from the Microsoft store, but got a "something went wrong please try again" on the first screen.
It's pathetic. I haven't used Windows since Win 7 , which I basically installed for gaming. Seeing the latest version of the OS makes me feel sorry for them. That's why Apple with all their assholery is eating their lunch (on the flip side my wife just got a MBP m1 and I was pleasantly surprised that it has hdmi port, magsafe, several USBc ports. Apple seems going in the right direction.)
You haven't had root admin on Windows since Windows 7.
The telemetry makes this clear. Reboots and updates even more so.
The UI lag and stealing of focus ("oh, you're typing a document... too bad, I want to launch a new Explorer window that will immediately steal focus") make it clear that the computer is in charge and will probably listen to your requests, but on the timeline it chooses.
I can think of annoyances but awful? Come on.