Yeah, got to side with others in this thread in thinking this is rather shoddy journalism. With no comparison between desktop VS metro application usage, this is just, as an above poster stated, "pandering to the commenters on Tom's that want to hear how Win8 is an unmitigated disaster." I'd be really interested to see those numbers myself.
Personally, I have two machines currently running Windows 8. One is an Acer W700 tablet that came with full fledged Windows 8 on it, and the other is a two year old Asus G73 laptop which I upgraded to Windows 8 about 2 months ago. The W700 has its dock set beside a 50 in HDTV and, when I'm not out with it, it plugs into that TV and functions as a secondary computer paired up with Bluetooth mice and keyboards, and the G73 is hooked up to a smaller HDTV and a monitor. The only touchscreen they use between them is the W700's tablet touchscreen and that only gets used when it is on the go.
Between myself and my girlfriend, using them both as desktop machines hooked up to monitors/TVs, we use metro about 25% of the time. The Netflix app in Metro and the browser is nice, the mail app is nice for our outlook accounts, the weather app is handy, and a few other things are nice. Gaming, web surfing (sometimes), word processing, etc, all are on the desktop because, simply put, it is better for it. I do quite like having metro as an option for some things though.
When on the move, the W700 spends about 75% of its time in the Metro interface. Simply put, it's good for touch. Not bad for mouse/keyboard once you get the hang of it, but it is particularly good for touch.
I'd be very curious to see more complete numbers on this. MS screwed up with this trying to force the user to use metro. Metro is a nice interface for certain things and this whole "metro should die!" mentality is just idiotic if you've ever tried to use desktop on a tablet. The dual nature of Windows 8 is an excellent approach in my eyes, with the best of both worlds being able to come out in a device like the Acer W700 (or any other fully featured Windows tablet) - a tablet for on the go or a desktop with just a keyboard, mouse, and micro HDMI or VGA cable. Really, I get the feeling that if one of you guys who are *so* down on Windows 8 in general got to try out one of these tablets for a while, you might change your tune a bit. Windows 8 as a pure desktop solution though, I can understand the gripes - MS should have done it differently.