What's the 99th percentile for that? How about packet-loss?
None of this is new stuff in gamedev, we've been build action games successfully since the days of 28.8 modems and 200ms pings.
Maybe that makes me a bit of an entrenched player(which is a poor position to argue on HN) but I've yet to see anything fundamental in these technologies that will address the latency issues in the same way you can with an interpolated client-side simulation.
It doesn't have to be as good, it just has to reach a certain level. And for a lot of games it works fine to have a bit of lead time on controls.
You set up a fixed delay, that is large enough to contain your jitter. It doesn't matter if one packet takes 80ms and the next takes 105ms when you don't display it until the 120ms mark. There will be no visible jitter.