The only qualification you need for food blogging is to be good looking (most important) and to be young. I don't understand how these people have the guts to tell other people how to live.
When I was in my late teens and early 20s, I thought I knew best. I was arrogant far beyond my actual abilities and I hadn't stepped outside my comfort zone enough to realise it. It took me quite a few years, and quite a few setbacks, to realise how little I actually knew. I'm grateful for those knocks and those years; without them, I'm not sure I'd be the person I am today.
I hate to think what I'd have been like if I'd happened to be in the right place at the right time and had wild early success -- I'd probably have been unbearable.
I think another important factor for these clean eating bloggers is the echo-chamber they exist in. They're surrounded by people cheering them on and keeping out those who disagree. (Just look how the audience responded to the article's author and the sport nutritionist.) In that environment it must be very easy to believe what you're doing is absolutely right.
to understand how clean eating took hold with such tenacity, it’s necessary first to consider just what a terrifying thing food has become for millions of people in the modern world.
Getting good information on what foods to eat is really, really hard. Everyone has an opinion, and the hard science hasn't quite solidified yet.
Who knew ... medical info ... from a doctor.
It won't be what you want to hear. They'll tell you, for instance, to eat meat or at least fish, and actively discourage vegetarianism, especially the more extreme forms, like the more extreme forms of veganism. Generally just don't go to extremes and VARY. And don't try to engineer yourself into a just-barely-not-deficient diet.
He'll also tell you that even a partial-vegetarian diet is nice for adults, but it won't do for kids. Otherwise, this can happen.
And here's the last bit of advice you'll get from them if they're up to date: if you don't like this advice DO NOT go to a homeopathic "doctor", DO NOT go to a "yogi", "guru", "blogger", magazine or whatever, NOT EVEN to actual medical sources of info (you're not equipped to properly interpret), go to another doctor (who will say the same as this one did of course). And before you say this is stupid, read [1].
(the general advice is, be a vegetarian, but have a sin day where you have a steak, or a fish, or chicken, and don't eliminate dairy (as in COW dairy, of if you must goat) ...)
[1] http://www.independent.co.uk/news/world/europe/baby-dies-die... (note: google something like "diet infant" or some such and you'll quickly realize that this is in fact a pretty common occurrence)
I get that feeling when I see entire aisles of chips at the 7-11.
They found something that works for them and decided to share it with others?
To be fair, the reader of the blog is lacking basic skills in this situation as well.