The technical content looks great and yeah, I can applaud the person's cause.
It's just that I don't think the challenges of running your own server were ever just technical - if people have a motivation to do something, they'll learn much more complex stuff. The thing is that there isn't a lot of motivation for ordinary people to setup (and maintain!) their own server if some cloud megacorp archieves the same. So I think, you also have to explain why you should want to run your own server as a non-nerd - and I think starting with 4chan might archive the opposite here.
> Most of the internet’s problems could be solved if more people had their own personal platforms
Could really be expanded upon. A small, not overwhelming "Why" section would probably improve it. I think this does raise an issue. If you wanted to suggest a change to this site it's not straightforward how to do it. It's clearly a community style resource because the different services sections seem to be written by other people.