It's clear to me that perhaps it was also that the experts understanding of the science that was wrong as well. Therefore perhaps these "scams" weren't scams but a product developed based on science that was promoted and later corrected.

In the linkedin post where the team unveiled their documentary they quote the involvement of the author of Why We Sleep (great book) and the decades of sleep research, who in their famous book actually did say that blue light impacts melatonin and is crucial for sleep, he even promoted blue light blocking filters. He later retracted that statement and changed his stance.

So were bluelight blocking glasses a scam, or perhaps a product that was informed by a misunderstanding of science. If I read a book based on a renowned sleep scientist who promoted blue light filters and I made glasses to help block blue light, if that understanding of science changed, am I a scammer?

If this is in fact true then this goes against any product or feature that markets reducing blue light such as not to impact sleep. Extending to include Apples marketing of Night Shift.