I don't doubt that Zuckerberg is actually trying to get a better perspective on what's happening in the US, he knows well a crisis is coming as a result of technological advancement. I think making it personal is a mistake, he'd have to quit FB and start something new to show how to fix problems in society to get credit. I'm not sure he's willing to do so though, I don't think he has the patience at this point after Trump won, he probably thinks he could win in 2020.
The phrasing of your post and the context made it seem like you were saying the Dems should just stop fighting Trump and let his policies roll over those that need our advocacy more than ever. Surely you can see how I'd construe that.
I'm saying that it is inevitable that people will get real sick of the Republicans one way or the other, that the idea that the Democrat party is in free fall and that the loss of 2016 is a mystery that will require some detective work or a revolution to undo is bull. Politics are not as complicated as pundits and bloggers have made it seem; they get paid to stretch everything to 24/7 news cycles, they survive on that, they do it instinctively. Obama left on high approval ratings, but the Democrats lost, which not surprising after eight years in power; people eventually feel they can afford "change", it's typical the world over. Obama's ratings were an indication that would actually happen, not the opposite.
There has been more material than most opposition political parties across the world would hope to ever have, yet Democrats are walking around with interrogation points over their heads, or at least that's how they come across, because of pointless bickering over divisions that are no bigger than you'd find in your average party.
All they have to do is look at what the administration and the Rs are doing, tell people how those things are negatively impacting them through effective campaigns, and keep tailing them all the way into each election. They'll win some and lose some, but the real easy to grab opportunity will inevitably come. Like I said before, in a two-party system it's all about the other party, not your own. If they focus on the Republicans and Trump they'll be able to grab that opportunity, if they focus on illusory introspection the Republicans will fill the void. Period. No other ways about it.