I'm not blaming the outcome on nefarious ad targeting, rather I would say that engagement-maximizing algorithms massively amplified Donald Trump's voice during the campaign. My concern isn't so much that my team lost, but rather what sort of candidates will succeed in this new media landscape. No other 2016 candidate from either side was really comparable to Donald Trump in how he used social media, both organically or with ads.
Political campaigns are waged within the media landscape of the day. When Nixon sweated during the first televised debate, he lost the debate and the election. That signaled a transition from radio to TV as the dominant medium for political campaigns, and the types of candidates who won national office in the TV era were different from those from earlier eras. In that way the dominant medium of the day has a filtering & selection effect on who succeeds in a political race. Trump's election signaled another transition, this time to the era of social media. It's not partisan to worry about the type of candidates that transition will push to the fore.