You could have phrased that in a far less confrontational manner. Claiming someone you don't know has “zero concept” is unnecessarily confrontational, all the more because you're doing that while simultaneously claiming to represent a huge and varied field with absolutely no cited sources for that claim.
> you're doing that while simultaneously claiming to represent a huge and varied field with absolutely no cited sources for that claim
I suspect it was phrased strongly because the GP made the same claim in the opposite direction: "Most software is grounded in an open source development and deployment tool chain".
