[ryandetzel]

Twitter is not like Facebook or Instagram or What's App. Most of the daily users are not actually logged in users, they consume the information in other ways like Google searches, widgets on news articles or entertainment websites. Facebook and every other app don't have this ability, everything is locked up because of privacy settings so the only people that ever see it are the people you allow. So, even if you're not a logged in Twitter user you still can see the ads and be monetized. Tell me the same for any other popular app out there.

[pconner]

Instagram accounts aren't private by default, and posts can be embedded in other web pages (e.g. a lot of clickbait "journalism" does this), though it does not have a friendly logged-out interface like Twitter.