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There's far too many variables involved for anyone to declare it a fact. Nobody is claiming it is a fact but you. Again, you can't entertain the idea that you may be wrong about something for even one minute. Which is why nobody should ever take you seriously when it comes to matters as complicated or as serious as this.
I entertain the idea that I am wrong all the time. Nearly constantly in fact. One MUST do that in order to absorb new information and ideas. Only after many YEARS of testing and re-testing do I normally feel a fairly high degree of confidence in most things.
It's interesting to note 10 years ago my ideas about a lot of things were probably pretty close to what you seem to espouse today. I was more inclined to use the 'consensus' as promoted by corp/gov as a starting point than I am today, but one can only get burnt so many times before one evolves their philosophical methods.
I won't speak for Techshare, but my sense from his writing is that his methods are similar to mine.