There was _one_ social network where I "lived in" where outrage was not the most popular thing: Orkut.
Because it was very focused on communities (each with their customs, kind of like subreddits -- some could get heated, but I only hung out in the wholesome ones), and on 1-to-1 friend relationships (via the Scrapbook and Testimonial features, which were positive by design).
Experience design matters, and maybe copying Twitter isn't the best place to be in the design space.