I think they are bogus. Saying X (in this case low-carb) = Symptom, but then singing the praises of n=1 experimentation is contradictory.
Let's put the shoe on the other foot. If someone came onto Paleohacks and started lambasting folks because they believed rice caused toenail cancer and potatoes made people grow third eyes or some other odd ailment, that person would get their ass handed to them here.
I've been long-term lower-carb paleo, with intermittent breaks, for several years. All of my uncles (maternal side) were bald in their late 20's as well as my maternal grandfather. I might have a high hairline, (which I've had since the first hairs sprouted on my head) but I'm not bald (yet). I'm sure I will be in about 10 years or so (genetics are a bastard), but so far I've beaten the odds, despite eating this way since I was 28.
I know, I know, empirical vs. scientific, blah, blah.
And you know what? It's the same for sex drive - I still "rise at dawn" (and afternoon, and early evening, when I smell roasting meat, when I'm watching TV, when I'm meditating, using chopsticks, playing guitar, oh nevermind... ) in my 30's, years after adopting a low carb approach, my health is the best it's ever been, and I've always been a sufferer of allergies - when I'm not eating LC paleo. My allergies don't return when I reintroduce starch, but by golly my weight skyrockets and I start having IBS issues again.
So, even if he was right, I'd be left to choose between hair or health. Kinda fickle, if you ask me. But on every count, his assumptions do not apply to me.
And trust me, if I could eat gratuitous carbs again and without ramification, I would look for any excuse to do so.