The OP included the following which puts the big picture clearly on the agenda:
Red Light, the quote you include from my OP does not in any way put any big picture clearly on any agenda.
The quote was: "I know a few cyclists whose children also ride... and those children
ALL wear helmets as a pre-condition set by Mama and Papa."
I was explicit in seeking the views of the non-helmet-wearing parents of school-age cyclists. To illustrate the reason for posting this request, I mentioned that
all the cycling parents I knew whose children also cycled insisted that the littl'uns wore a lid. Most contributors spotted what I was asking and gave helpful, clear and thoughtful responses to my question.
I had felt that I was a rarity as a cycling parent who was casual about whether his offspring wore a helmet or not. the replies made it helpfully clear that I'm not. That's all I wanted.
I continue to see no indication that I have a pro-helmet agenda. Nor have I read of a typical cycling helmet that weighs 450-500 grammes. I'm not the one who claims I'm anti-misinformation.
I rode earlier today in near-zero temperatures with just a wooly hat. No big picture. No helmet. No controversy. And no crashes, although it did feel slightly glassy out there.
On a linguistic note: In Albanian this winter weather where there's sunshine and freezing air is referred to as "Dielli me dhembt", which translates as "The sun with teeth". A beautiful phrase for these conditions.