Where did the RSS feeds go? It is harder to find them on any site, even if they do give an RSS link. Too many don't have RSS at all. Why?
Newsletters are the replacement for RSS feeds. Newsletters which seldom have any news, just more marking.
Subscribe used to be an RSS feed link. Now they want your email address. They don't want to give you something when they can take something from you instead. No doubt this is about getting email addresses. No matter what they say, sites do collect and sell email addresses. They may not call it selling (that wouldn't be nice or popular), but it is the same thing. All in the name of marketing and making a buck.
So much is based on marketing. It's more important than readers, or shoppers. People are exploited by marketing, especially on the Internet. If people really mattered would they be treated like lemmings this way?
Why are RSS feeds disappearing - because they want to drag you back to their site where all those plump, juicy ads await you. Those videos that you can't stop, those pop-up ads which have become popular again (mostly spamming newsletters ironically enough).