Average age is 16 on Discord, average time spent per day is less than 10 minutes, so it's being used as a messaging service (but connected to a greater gaming-type ecosystem). 90% of servers are less than 15 members. 30% of teens use it, which is significantly higher than the rest of the population.
I don't really have anything concrete to point to for my general feeling about American society slowly moving into a post-social media phase. Tiktok falling into relative unuse with most Americans except Hispanics is probably a main point of data. There hasn't been anything emerging to replace it besides (according to studies) the more cordial YouTube, which you cannot really say is a social media site. It is the most widely used of all of them, though, something like 94% penetration.
