There are several questionable claims and viewpoints in this post. This is one I felt worthy of addressing because information to the contrary is not widely known:

> RSS is one-way publishing; there is no way for content creators and their audience to interact

Not true. Feeds support a byline for each post item. This typically contains the author's name. You can, though, also include an email address there. For readers that are also mail clients, those readers* can allow the user to "reply to" a given feed item (in the same way that your mail client lets you reply to a message sitting in your mailbox). I know of very few feeds, however, where people actually include a reply-to address. It's a network/ecosystem problem.

* or any other reader that wishes to allow invoking the user's default mail client