"This is the voice of someone — in this case, and often, a man — who is as comfortable speaking about virtually any subject as he is uncomfortable speaking at all."

"(This is not the careful, measured voice of Sheryl Sandberg, the cheerily blustering awkwardness of Elon Musk.) It is, by default, one of the defining communication styles of its time. Right? So. ZuckTalk is a style of unpolished speech exhibited in contexts where polish is customary. It’s a linguistic hooded sweatshirt in a metaphorical boardroom. It is more than a collection of tics, but its tics are crucial to understanding it. One: So. Another: Right? In their Zuckerbergian ultimate form, combined as a programmatic if-then connective move: Right? So."

 
From "The Rise and Fall of ‘ZuckTalk’ So, there’s this oratory style that asks for validation while bulldozing through almost any topic, right?" (NYT).

Here's the example given of Zuckerberg's "right, so" tic:

 

I think what's going on here is a person who knows he's very smart trying to include his interlocutor, but not trying that hard. He's essentially saying I care that you're keeping up and I do want you to follow along, but I'm still going to get all this out without stopping to let you speak and, perhaps, to show that you're not really on the same page with me. I'll just credit you with understanding and agreement and proceed with what I've got to say. Trust me, we'll all be better off if you go along with all this. Why, it's almost a human relationship.