I've been on Mastodon since 2016 and never really got into Twitter. I just don't understand why the "algorithm" matters. Who cares if people who don't follow you see your post? I want my followers to see my posts, and then favorites allow me to know that my followers liked what I posted. It's a nice dopamine boost and helps me feel closer to my community.
A lot of posts I make unboostable as well (followers only). "Promotion" doesn't really factor much into my use of Mastodon so much as being "social".
I'm not a part of the demographic who would experience racism around this. So, I can't comment there.
I am a white hipster though. So, I usually call my window manager customizations "artisanally hand crafted".