I agree it's a bit one sided and it may be that MS make changes, during the consumer preview, to the finished product based on feedback. Big risk if they don't though & he's not the only one though.

Personally If it were me I'd make Metro an option in W8 so people can get used to it/try it and then stick in w9 as it is now, compulsory. And from talking to someone today who has installed W8 on a desktop with a portrait screen orientation it is not a pleasant experience using Metro.

Having tried using a Windows Phone with an open mind at a demo event on launch day (in the UK) I asked them if the live tiles could be used to replicate the current home screen on my Blackberry (2 lines of messages, call log, appointments plus time, date etc.). They assured me it could be done and then after fiddling with the thing for a few minutes admitted defeat. Calendar was the first sticking point as it only showed one appointment and that couldn't be changed, and you'd need to have several email tiles as each one needs a different tile. I don't use many Apps and mostly use the Berry for emails, diary and BBM, so hardly a power user however what I do currently needs to be perfect on any replacement phone.
The people tile is another oddity they were very keen on this and there are lovely pictures from your contacts on the front of the tile that change regularly. So I asked if these pictures shown are those people with status updates, only to be told they're just random picked from your contacts.

And then I was told that a visitor earlier in the day had logged into Facebook and synced their FB friends with contacts on the phone. Now they then realised that this was a dumb thing to do on a phone they didn't own and tried to delete these contacts which just didn't work. No one had done this before and so they resorted to the web to find out how to do it and the advice was to unfriend them on FB and then refriend them, all 600+ of them. I think they had to wipe the handset in the end. There were some really great things about the phone and the Xbox Live was one of them and the browser (IE) was amazing really blew me away. It was fast and pages looked normal (albeit without flash), having Office on there was another powerful feature that looked very good. But then no message catch-all so emails to different accounts went into separate tiles as did SMS which again seemed odd not have been there at the start.

As I say MS are trying to introduce a unified OS GUI across all forms of computing and it may be that this is a big winner for them but as the old saying goes don't count your chickens before they've hatched.