The way I see it, they tapped into a widely held belief , rather than fears. It is a popular belief that doing mental work staves off cognitive decline (including age-related). I bet you that everyone at Lumosity actually believes it because their mother told them that when they were kids. My wife (Japanese) always says "good for older people" about any sort of puzzle. She didn't get this from being deceived by Lumos…
No, it's not. It's like they were appropriately fined for profiting off unproven medical claims.
> Testimonials being paid for shills? Like, say it ain't so. Every damed commercial you've ever seen in your life has fake people presenting fake testimonials. It's assumed.
And they're labelled as an actor representation. Giving them a pass because it's "assumed" is irresponsible and harmful to those who might not otherwise know.