The technology to a huge extent doesn't matter, except for things like decentralization because those impact how end users use it. Honestly, I'd probably just

The technology to a huge extent doesn't matter, except for things like decentralization because those impact how end users use it. Honestly, I'd probably just build Mastodon. I use it sporadically. My feed is exactly what I subscribed to, and nothing more. That of course doesn't make for an amazingly engaging platform that constantly pushes people to engage and to create new accounts, but that's precisely how I like things to be. You probably won't get rich from catering to people like myself, though.