It is important, IMO, to understand that pharmaceuticals, including vaccines, and OTCs, along with poor chemical laden foods can, and do impair and damage liver and kidney functions... both of which are needed for proper vitamin D synthesis/metabolism/utilization...
So while people may be stuck on one or the other "cause", be it "genetic" or "vaccines" and not willing to give up their "stand" on them, the problem IS "all of the above".
People need to recognize that when they are presented with these things... and not look at it as being an either or... or an "attack" on, or in conflict with their position.