Comment by crystal_revenge

Social media used to be about content sharing, but it's clear that it's far more profitable to keep your users on your site at all times and keep the content they create in house rather than linked somewhere else.

HN is probably the last true aggregator site left that I know of.

It's partly why the web is so much worse. There's really no reason to create content outside of a walled platform is it is getting increasingly difficult to find an audience for it. Even blogging is an uphill battle since more and more social media sites penalize link sharing (they want you to create the content on their platform and leave it there).

That's why it's not surprising that these APIs are disappearing since the fundamental model has changed.