The damage done by children vitamins, primarily the ones that are dressed up to look like candy, is actually dealt out by the prescription medication that children swallow and die. The danger children vitamins pose would still be present if they were nothing but sugar pills (and sugar pills that look exactly like medication are dangerous as well).
How many parents of poisoned children have heard "I thought it was candy!"?
That you and the other parents you know are reasonably paranoid about the danger of vitamins and other medications is commendable, but thousands of kids are still being lethally poisoned. If the injuries to children from magnets are enough to concern us, then the poisonings should concern us even more so.
Again: I perceive your argument to be that if the government is going to regulate products, it should sort products by the number of injuries or fatalities they cause and proceed from the top of the list downwards.
My argument is that this isn't the government's M.O.; they don't see it as their mission to eliminate all risk, or even the risk of bad parenting. Instead, their issue is with products that appear to be much much safer than they are. Their concern is literally constrained to marketing, and nothing else. I do not see how you get around the fact that tiny round rare earth magnets sold in sets of 200 are, in actual fact, way the hell more dangerous than their colorful fun packaging makes them seem. Zen Magnets appears to suggest wearing them!
I think I have done all that reasonably I can to make my point of view clear, short of writing an essay, but it is still not understood. I'm not continuing this.