How hard would it be for HN to filter posts like this? There are only so many permutations of "Why is this here? / What does this have to do with HN?" possible...
To my knowledge, HN hasn't added any new features in years. I think the people who run this site are pretty happy with it the way it is and don't want to change it, despite many suggestions for improvements. So I wouldn't hold my breath waiting for them to do anything about it.
You just have to be around for some of them. Sometimes pg has done things to the UI of the site, then there is a large thread of community commentary, then it's kept, modified, or removed. If the feature shows up, and then goes away over the course of a day or two, you might miss that anything happened.
In the past pg has mentioned adding a feature to the running instance via a connected REPL, not the real source. If it proves its usefulness it goes in the source -- if not, the next restart removes it.