But as you can see from the responses to the GP comment, many nonzero people on HN think and believe the contrary.

So, the comment attempts to impose on the reader the perception that any contrary belief to what the commentary implies is a "normal HN opinion" is something that should not be held with credibility.

It's counterproductive to say that some non-zero group of people on HN believe something when a possibly equal or greater non-zero group believe something to the contrary. It makes me wonder if the point of the comment is to suppress contrary positions.

Agreed. I was just try to help with framing if it was bothering you. If instead you're trying to help make the site better, well, more power to you.