These non-stick pans are usually cheaper then stainless steel and cast iron, so people with lower income are more prone to buy it. Consequently, considering that low education is associated with poverty, poor people are buying more of this type of pans and not using it "properly" so getting exposed to possibly more harm and not knowing about it.

Also, " just discard the pan if flocking occurs", is everything that this industry wants: you'll continue in an indefinitely loop of trowing away pans and buying new ones for the maximization of their profits. Thus is expected that flocking will occur more soon than ever.