He does not need to rebut anyway go is language created by googlers for a need they had and they open sourced it. If it does not meets anyones development requirements they can use another language or fork it and do the changes themselves. There are so many community driven open source projects one of the most used is Kodi and if you have spent any time on it's repo you can see that the maintainers set a hardline on what their vision is and what code they are willing to accept. Funnily enough an argument is going on at the moment where Kodi maintainers want to remove all hardware specific hacks in future versions and some dev opposed to it. What do you think will happen?