How Can this Help User
Structured UI Experience - RSS page is structured with all the RSS which are live for user to manage like add or edit the settings.
How Does Blog RSS Works
Navigate to Sites > Blogs
On the list view of Blog(s), there is a gear icon of Settings. Click on Settings.

In Settings, there is option of RSS.

Click on the new option to add the feed name and select the blog (Choose blogs that are live, not in draft)


Add specifications on number of post in RSS
Enable/Disable the full content in RSS feed
Click on Add to save the details.