Basically I've been waiting a while to see the summary of this thread. Seeing as how it's an old thread and no new replies (or snipes) have been made in a while...
It seems that the gist of the thread is this:
People who own the 6D and use it (including me) seem to be generally pretty pleased with it's performance and likely (I don't want to speak for everyone, of course) appreciate its price-point to usable value ratio. I personally haven't been able to generate income (haven't really tried either) using my gear, therefore it hit the right buttons for me to pull the trigger and buy it. The 6D works fine for what I use it for, so far, mostly landscape but also several nature photos of birds, bugs, and other wildlife running around. I don't recall any major missed opportunities for photos due to the AF system using any of my lenses. I'll leave it at that.
The other camp of people are basically used to the higher-end equipment they carry with them with what has been argued (and usually agreed) to be a faster, more capable and undeniably more expensive AF system.
Nobody is an idiot for the equipment they bought, no matter what has been implied by some posts either pro or con regarding the 6D. I can say this, after having used (but unfortunately not owned) all of: 5DIII, 5DII, 7D and now 6D that they have different capabilities and EVERY photographer has different abilities, including financial.
My final 2 cents: Use your gear. Spend less time arguing spec data and more time taking photos. Learn what your gear is capable of and worry less about what someone else says it shouldn't be able to do, despite it still being able to do it or come usually impercievably close to doing whatever it was that they said it can't. Try borrowing or renting gear and using it. Take a personal challenge to get an old rebel out and a shorty 40 and walk around shooting all day with it. Learn to use the gear in your hand, regardless of brand/specs/reviews. You'll probably be suprised, you might even find yourself enjoying photography in the end.