There are not as many as before, but not as few as you might think. A lot of them are hidden these days (you have to inspect the page source), but they are still there.
Readers like feedly are able to find them if you just provide the URL to the website.
Not everyone is on twitter, but lots (all?) of Content Management Systems and blogs have a RSS feed.
As an academic, I’m syndicated to several labs and research groups which have their own websites, but don’t care about being visible on Twitter.
deleted by creator
There are not as many as before, but not as few as you might think. A lot of them are hidden these days (you have to inspect the page source), but they are still there.
Readers like feedly are able to find them if you just provide the URL to the website.