> 1. they apparently gave advice to both the clinton and trump campaign

Just because this is worded ambiguously, to clarify the "they" is Facebook. CA on the other hand was effectively the Trump's digital ad campaign.

> 2. the trump campaign did targeted marketing better (ie. targeting the base rather than the marginal voter)

This ignores that a lot of what made CA different is that they used microtargeting to discourage turnout via fake news stories.

3. "I'm skeptical that Cambridge Analytica has any data or expertise that couldn't be replicated readily by someone else"

After CA's methods and actions became public, FB massively limited what you could do via their API.