Selling the ability to target different demographics of people with different deceptive and divisive messages to foreign government agents is also bad.
We can recognize both of these things, and perhaps even find a common root cause.
The other is literally how all advertising has ever worked! ( yes, cable TV was targeting you ). Yes, placing an ad in a certain location is also targeting. It's not inherently bad, it can be abused though.
The implied "please oh save us facebook", is well, WTH. Should we stop all political advertisement? should we prevent outside money in local elections? should we prevent foreigners from advertising in a different country? These are all great questions. But no one has ever had the right answers.
We're crucifying a company because they amplified society. We are asking them to solve societies evils. We are not focusing on the actual evil itself. ( sorry for the rant, but you went on one too :-P )
And yes, non-transparent targeting of opposite fact claims to different voting blocks is quite different from "put a TV spot on Conan because the young people like him", not least because anybody could see the spot on Conan, and because TV advertising is regulated.