This is pretty crazy. Perhaps no more crazy than running desktop operating systems on servers with huge amounts of software which just isn't required for the tiny go services running on them. CoreOS is another similar idea (for servers), and has auto-update.
This is a fairly balanced overview - he uses both, but appreciates Go because it's a bit simpler. Scala sounds interesting and far more concise than Go, but I'd be worried about whether my future self would understand what I'd written 6 months ago.