Strip a user of choices. What font should I use? What size should it be? How should I format pull quotes? etc. Medium answers all of those questions. You get w

Strip a user of choices. What font should I use? What size should it be? How should I format pull quotes? etc. Medium answers all of those questions. You get what they offer - and it's overall pleasing enough to most people. The typography is easy to read, the UX is decent enough for a layman to pick it up, etc. A few articles have popped on HN regarding this paradox of choice, Apple utilizing it, etc. I'd say Medium is popular because people can worry about writing and don't need to fret any other details.