I don't think they are complaining about the hosting, but the publication process being brittle.
For example, I use pelican (pretty much 'what if jekyll but in python and more flexible'), and found that every time i wanted to update my site there was a problem with some unmaintained plugin not working with the latest python standard library, or similar.
It's also easy to set up what feels like good process for publishing, only to find that it wasn't as well documented or obvious as you thought the next time around. This is natural for anything semi-complicated that you only do once every 6 months, when you're really trying to get something else done (writing the damn content).
If you already know how to use it, nix is a good solution to this, as you can pin all dependencies (including languages and external tools), and they will still be there and working in a few years.
What if you also didn't use plugins, but a simple script that appends <section> tags to your blog's "index.html" and chunks and links them into whatever number of those you want per page? It's a blog after all. I agree it should be simple. I haven't met a blog "framework"/"platform" I didn't hate from the moment I saw it. Maybe I'm a dinosaur, but this seems trivial. Write this in whatever language you want.
For example, I use pelican (pretty much 'what if jekyll but in python and more flexible'), and found that every time i wanted to update my site there was a problem with some unmaintained plugin not working with the latest python standard library, or similar.
It's also easy to set up what feels like good process for publishing, only to find that it wasn't as well documented or obvious as you thought the next time around. This is natural for anything semi-complicated that you only do once every 6 months, when you're really trying to get something else done (writing the damn content).
If you already know how to use it, nix is a good solution to this, as you can pin all dependencies (including languages and external tools), and they will still be there and working in a few years.