I totally get that, but the thing is: what determines whether you're making a high-quality/substantive or low-quality/flamewar contribution has not only do with your perspective, but also that of the reader—or rather the distribution of reader perspectives that your comment is landing with.
The key thing to understand is that the value of a comment is the expected value of the subthread it forms the root of: https://hn.algolia.com/?dateRange=all&page=0&prefix=true&sor....
If you want an in-depth explanation of this, the best one I know of is this lengthy interaction I had a few weeks ago with a commenter in a similar situation: https://news.ycombinator.com/item?id=27161365. The in-depth portion starts here: https://news.ycombinator.com/item?id=27162386.