[Applejinx]

On the contrary: my guess is that it is a method for people to familiarize themselves with the whole topic of tradecraft, knowing that ALL countries have put great effort into exactly this in recent years.

There's just so many spooks and bad actors about. Having some familiarity makes for a more educated populace who are going to be more wary of being manipulated, so there is really no reason to try and reserve this information for an elite. Because the bad actors are very grateful when you do: they will prosper in a field of targets all of whom are super naive.