If you think other social media is toxic and stifles speech in the same way Twitter does, you are intentionally being dishonest, have your head in the sand, or simply have little understanding of how these platforms work (I'm going with the latter based on your characterization of reddit alone).

- Reddit has endless communities, and long text forum posts and comments. Most people lurk in the top subs, but almost everyone has a niche subreddit they have actively posted in, or has an alt just for that purpose

- I find it hard pressed to find someone who purposefully creates an Instagram account and does not, at the very minimum, share photos with friends and family. I use the app daily, and even the boomers that are finally coming onto the platform regularly post photos.

Most people are followers in the broad sense, but on a community level, especially with their friends, families, and communities, are sharers. That's the difference between twitter versus facebook, instagram, and reddit. You are making the fallacy of applying the influencer syndrome across the entire platform. The majority of users are not remaining on the platform because of influencers. These other platforms are primarily about individuals communities and friends. They start by joining the platform because of a friend, a family member, or to join a niche community of likeminded folk, and then they are gradually exposed to the platform-specific SEO junk food. Twitter on the other hand, is demonstrably, provably, about certain power users. It's about following the "right" people to get the most out of it. There is no community in the organic sense of the term on twitter, except by pure happenstance ("tech twitter", "black twitter", and so on, but even then it's at best, a loose association).

So before you tell someone to get off their soap box, maybe make sure you have a clearer understanding.