Sorry, you pressed my button by seeming to refute a scientific study, albeit one that could have been more robust, based on your one subjective anecdotal data point. Which is far more unhelpful than any acronym.
And as far as counting on Vitamin D to help, it depends entirely on your definition of help. The only real, critical help that was needed is reducing severe illness which can overwhelm hospitals, and deaths.
Even a single percentage point of help in those areas would have meant hundreds of thousands fewer hospitalizations and tens of thousands fewer deaths. Anyone with any understanding of health and nutrition knows that a rational health education campaign would have made far more than a one percentage point difference.
Early in the epidemic, the American Dental Association posted guidance for respiratory illness prevention that included Vitamin D, Vitamin C and zinc. That guidance vanished as soon as Fauci and the vaccine shills started threatening everyone posting such “misinformation.”
One dimensional thinking runs rampant through society, with deadly consequences.