It doesn't seem like the author's reading past the first line of the comment. The HN commenter says 1kMRR from a side project is indeed impressive. Immediately

It doesn't seem like the author's reading past the first line of the comment. The HN commenter says 1kMRR from a side project is indeed impressive. Immediately after, the author states "$1000 per month from a side project is considered meh." The entire article is responding to a straw man. FWIW the original article the comment came from was about 1k MRR startups. I think if you treat it like a startup, you better be making more than 1k/mo after a couple years (or, alternately, losing 100M per month) to be considered impressive.