I agree with the sentiment that people shouldn't beat themselves up over having acne or if they don't have success with diet, and that people should steer clear of the 100% cures and people who rack it all up to leaky gut, candida, demodex mites, or whatever else.
That being said, you haven't exactly linked any evidence that absolutely establishes no link between diet and acne. It's sort of ironic that you're so sure of the etiology of acne to the point where you can't have an open discussion about it. In that sense, you're not so different from the very people you're criticizing for misleading people. People like polarized, clear cut answers, but the reality is that the body is extremely complicated. Disease is complicated.
Your username should be Canadianheart, since you have so many posts belittling us stoooopid 'Muricans