I might just be that the comments I do read (in relevant contexts or not) stands out for me a lot due to their predictive formula.

Is there some way to search comments for regex? Just for my curiosity.

It generally annoys me when I see it no matter what site I'm on but you're right, on here it's rare and more importantly this is HN so you should expect a bit here and there. Most of the time these people are just excited about something they're creating.