Sure, and the GP was not a substantive comment. It was a generic, off-topic, flamebait tangent. Why flamebait? Because people can't discuss that topic without yelling at each other, and certainly not when the trigger is an information-free one-liner.
Speaking of yelling, can you please not use allcaps for emphasis on HN? This is in the guidelines: https://news.ycombinator.com/newsguidelines.html.
By the way, "substantive" isn't the same as "substantiated". It just means containing information that would be of interest to a curious reader. For example, if I describe an anecdote from my experience, that can easily be substantive without there being any need to substantiate it (e.g. by proving that it happened).