I don't know the mechanics of this or if it would just be manual, but when there is aggregation of submitted links (which I would assume is the case for a story like this), it does seem like the main PR link should be the title URL, but could other links all just be collected in a single comment?

I really prefer the actual PR links myself, corporate BS or not, because that gives me the language I need to then search out the other stories that are based on that PR. If you start with a blog, now I have to do the process in reverse to find the source. I think the HN policies are just fine in this regard. And even if other links can't be collated into a comment, I generally trust HN readers to provide additional information or helpful links when appropriate.