Right now I've got my own self hosted platform, running Wordpress on a Digital Ocean droplet. The constant security updates for Wordpress are a nightmare, and it seems I have to hack both my theme and my post code every time I want to make a slightly interactive post. Never mind that there doesn't seem to be a decent way to preview posts on mobile.
As others have mentioned, it seems the best way to get more people in control of their own platforms would be with easier static tools.
On that note, I've been really impressed with org-mode and pandoc. I've been writing and generating code within a text based environment lately, but it still feels as though the process hasn't really budged or improved much at all in the past 15 years. With org-mode and pandoc, along with babel, I can write and test code, embed images, and generate decent html/pdf all in one go.
But for the casual user, I think it's become more difficult to self publish over the years, not less. The tools we've built have gotten pretty embarrassing if our goal is to get as diverse of a population as possible speaking and sharing their ideas openly on the web.
Cheers to everyone still working on tools like org-mode, pandoc, and latex. It's still relevant, and it still does a great job. If you haven't checked them out, take a look. I was certainly surprised by how far these projects have been taken.