The problem with TikTok is that it's essentially just for actors, musicians and dancers.
On Youtube people can Vlog, it's impossible to vlog on TikTok.
I think among the many social media Facebook and Instagram manage to capture the most people.
- Facebook/Instagram everybody can take a pic or draw some art, or a video or even engage in written discussion, plus they get some officially & professionally produced content from TV (not as much as YT but they do)
- Youtube misses out on people who can take cool pics and write insightful thoughts but captures those who can take cool videos or can vlog, plus they get tons of official professionally produced content from TV
- TikTok misses out on everybody except amateurs who can act, sing or dance
- Twitter is a stadium for culture wars and breaking news
- Reddit is where you can take your time to articulate thoughts/research and link up with people who have the same interests. The news arrive just as fast as twitter without the 140 ch. limits, and it's not properly a stadium for culture wars...more like a small UFC arena