That's fair. Having looked at a few of those threads, I think the premise behind the "level playing field" statement is likely flawed.
These are press releases. They will be sterile. Compare that with someone linking to their personal website where they can choose to add any title of their choosing. I'd humbly suggest that those two categories being treated the same on HN isn't right given how the latter may or may not be an originating story.
I respect the work you guys put in to offer such a service to the community and for the patience in putting up with a nobody who's challenging your historical decisions in the comments :) I hope i don't come across as rude by saying that the experience for niche topics might be a little better if the headlines are made accessible without adding opinion.
Other than that, i respect your work and will not editorialize the titles anymore.