Thank you for pointing that out! I didn't know that until today. I also discovered that you can get RSS feeds from Reddit and a few other services (see my other comment in sibling sub thread)[1]. So, it sounds like I might be using RSS more.
For reddit, you can also look at inline-reddit.com
NewsBlur and a couple other RSS feed readers have built-in Twitter clients.
You can also use rss bridge to get Instagram in your RSS feeds.
So, the next idea would be a service that scrapes contents and builds an RSS feed.