You don't see the Russians attempting to influence the US elections via social engineering as a problem?
Paying to promote ads is a pretty common thing. It's as problematic as any other ads that are designed to influence you - so pretty much all of them.
Right. The real problem is we've allowed ad companies to mediate not only commercial spaces but now also personal interactions. So propaganda shows up not only in public spaces but also in seemingly private ones like a Facebook wall where it's hard to track and near impossible to counter.
The American electorate is gullible, and that’s a hard pill to swallow for most; easier to yell “Russia!” “Collusion!”