Imagine if Facebook or Google started doing this. "Oh, you're friends with someone who says X? Welp, you must be a Bad User and your posts will receive a lot l

Imagine if Facebook or Google started doing this. "Oh, you're friends with someone who says X? Welp, you must be a Bad User and your posts will receive a lot less visibility and the validation that you desire. But if you were to stop interacting with your Bad Friend, you could become a Good User again." And oops, "Bad Friend" no longer gets invited to real-life parties because most people still consider FB the most convenient way to organize them and people only rarely remember to forward the invites.