That's a rather pretentious way to miss the point. The question was “Can you expand on this? Why do you think that?” and the response was a sweeping assertion and the name of a couple of products with no further details, or even a clear indication of which of the three languages mentioned further up-thread or others were being used as a basis for comparison. I wasn't asking for a peer-reviewed paper but even, say, “My team had a productivity loss when they switched to Go because [reasons]” would be better than nothing at all.