I have to disagree with that premise. By submitting your own posts or websites (as in "Show HN"), you allow the opportunity for commenters to communicate directly with the author. Personally, I think that's really powerful.

The voting system is there for a reason, and posts should get attention due to quality content. The person who submitted it should be irrelevant in that regard, and hence, I'm not really sure what the downside is.

Can I ask, where are the other discussions on this matter that you mentioned?