The real problem for me is the way political ads on social media (and on the web in general) can effectively undermine FEC attribution rules. Between direct targeting with ads that run for short periods, and promoted posts of new accounts, there is basically no way for existing regulators to enforce attribution to a PAC or candidate, so outright lies and shady adverts fly under the radar with even less consequences than in the television or print media. The debate here has to be about steps they can take to help the FEC enforce it's rules I think, not about banning it altogether.
It feels like a false dichotomy, especially when freedom of speech is invoked.
We don't talk about freedom of speech for drug companies when we require a side effects disclaimer at the end of a pharmacutical ad - it feels disingenuous to me to talk about it here too when we should be talking about enforcing the FEC's attribution guidelines.