I think the issue with "social media" is that it doesn't end.

If your entertainment is a movie or a book, there's definite progress to it. You can finish a movie in one or two sitting, the book has a beginning and an end (unless it's by GRRM or Rothfuss...)

Even TV shows end, no matter what kind of reality dreck they are, giving you a natural point for slapping your knees, getting up and saying "yep, that's it" and moving on to something else.

Social media algorithm feeds just give you infinite amounts of content with no beginning, middle or end.