Maybe that's so he's not preaching to the converted? I'd imagine that most non-tech people wouldn't have any idea about the multiple layers of problems that online ad platforms can generate. I'm no tech genius, but I'm my friends' go to guy for anything computer related, and all of them have no idea about any of this, but most of them are tech literate at a 'general' level. I'd think the vast majority of people have no idea any this is even happening, let alone the downsides.