That was a great thread thanks for linking it! If Go wants to be a serious solution in many applications pauseless GC needs to happen and until it does it will be just like all the other solutions that can't play at scale and low latency. If it stays in that zone it'll have to compete with a very large set of perfectly fine solutions with massive libraries and lots of people who know how to code in those languages.
https://groups.google.com/d/msg/golang-dev/GvA0DaCI2BU/1EpYa...
The good news is Go has been chipping away at that stuff.