Hey, isn’t a lot of this “need” the fault of the gummit in forcing larger crowds of kids together than would exist in a homeschooling situation or most parochial/private schools? If there is an axe to grind against the pub skewls, this would be the place to do it.
Not everyone who is vaccinated responds to the vaccine, however, when large enough numbers of people in the community are vaccinated it acts as a fire break, keeping the disease confined, and preventing these killing and crippling diseases from being passed around.
But....What I suspect, is that as a nation we have forgotten how devastating a plague of polio, measles, or whopping cough can be. Maybe ( sadly) we will need to go though a major catastrophic event for everyone to relearn these lessons.
As for homeschooling....Homeschoolers are not kept in a cage. Our kids were in ballet, when to the “Y” for swimming, took ice skating lesson, were on the ice-hockey team, and active in scouting. They went to church every Sunday and sang in the choir. So...plenty of crowds there with lots of kids and adults.