Anonup is raising interesting issues about social media for me. It appears to be remarkable well "weeded" of trolls and bots. The audience is high level, loving, and erudite. There's none of the anger of Gab or idiocy of Twatter.
I post some things to Gab because I don't feel they do much for people here (e.g. article links with a pull quote). Some stuff like my photos it would be nice to have a mechanism to push to both. Anonup is like your peers and bosses are watching, so you had better put out quality stuff.
The one downside I see of a niche social media platform is you don't so easily get to promote people and content from obscurity as a "big name". Once I had 100k+ followers on Twatter I could magically direct attention to videos etc. For someone who had sung a special song, say, and put it on YouTube those thousand views would make their day and week.
Sometimes quality and quantity are in tension; other times not. One public square, or many?
I enjoy AnonUp because I give info here to my FB group I have had over 2yrs almost reaching 300 members. I know it's small but we have good quality content. I rather have the members with the facts and have them seed it out too. I have twitter with just a few people I follow again for content. I have Gab for back up. Lastly I am on Right Only too. The most amount of people I follow is 20 as. I never do it for the numbers. On fb I bring in people I see having no one around for support when I see battles happen on Social media. We have all levels on my site of awakening.