It's a very good paper, yeah. I will link it from the gist.

That paper smacks of a Chesterton Fence. They haven't come up with a tested replacement for many of the use cases, i.e.:

  These designs are not yet general enough to cover all the use-cases outlined above, but perhaps can serve as a starting point...

yet bullet #1 in the next paragraph is

  Deprecate Fork

I think this is a case of security guys being upset about fork gumming-up their experiments. I don't really care about their experiments. The security regime for the past 20 years may have bought us a little more security against eastern bloc hackers, but it hasn't done squat to protect us from Apple, Google, & Microsoft! I have never had a virus de-rail my computing life as much as the automatic Windows 10 upgrade. Robert Morris got 400 hours community service for a relatively benign worm. If that's the penalty scale, Redmond should get actual time in the slammer for Cortana, forced Windows Update, and adding telemetry to Calculator.