And yet, not a single reputable journal will publish those papers, the medical community won't change the recommendations, and those studies go unreplicated.

It seems like there's an undereducated underground on the Internet that has the hubris to think they know more than the medical consensus, so what you're seeing are the effects of that hubris, nothing more.

Turns out Vitamin D is the anti-vaxx of computer nerds. Pretty hypocritical, but unsurprising.