We need a standard API to subscribe to blogs on other sites, that will appear on our blog feed as news feed -- like how facebook or tweeter feeds work. RSS is too personal, too much outside the flow.
I have no idea about "too personal" mean, but the only reason you would consider RSS "outside of the flow" is due to the concerted effort by Google, Twitter, Facebook and Apple to reduce support. Even Mozilla(!) has been involved in removing support.
RSS is a perfectly good, tested and usable mechanism. Coming up with yet another syndication mechanism would be a huge waste of time and effort, most likely resulting in insignificance.
[1]: https://havenweb.org