It's being presented as an alternative that doesn't cut corners or make the incredibly dangerous compromises ZCash does. Would you expect a thread lauding SnapChat as a privacy enhancing messaging app to not have a bunch of people, finding the suggestion ludicrous, "pushing" Signal?

As to the video, the talk was pathetic. The speaker claimed he was going to explain zk-SNARKS to the layperson, then immediately claimed to not understand them. It presented none of the risks of ZCash, and only really covered how joinsplits work.