Decided to seek out the absolute antithesis of WordPress after this experience, and don't wish to be dependent on peoples whims so much anymore.
I recognise the limitations of SSGs, but I think these are overcomeable, and the benefits (Speed, CI) seem massive.
I am open to hearing other suggestions people may have though.
I would recommend spinning up the most basic site from scratch to give it a try, takes minutes tops and its got a built in dev server to see your site.
It pretty much all rapidly clicked into place from there. The idea of adding content as markdown is so easy and appealing, and the flow is so logical. The build times make me smile. Everything feels so rapid and under my control.
Today I'm still on WordPress and none of the SSG feel simple enough to me.
Git, markdown, build pipelines... Code editor. It's all fun for work and collaboration with devs but just out of interest for blogging. Also they mostly generate invalid HTML and lack features or have custom templates. And next upgrade could break everything.
I prefer something that is helping me focus on blogging for long term without upgrade maintenance cost and without fearing platform dies. But yeah WordPress is not perfect and I'm considering maybe to glue a few tools together in the long run and make my edits in pure txt or HTML for which no existing SSG or WordPress are needed.