I wrote this for my own self-hosted blog a few years ago:
> My goal is to write good blog posts, and µstack exists for the purpose of making it as easy as possible for me to write good blog posts. As far as I can tell, there’s no meaningful correlation between the quality of work published on a website, and the amount of engagement that website receives. I could track clicks or traffic or RSS feed queries, but that data would only tell me how many people are reading what I write - it wouldn’t tell me if my writing is any good.
I feel like it's relevant here. The OP tacitly assumes that engagement is the goal, that your purpose in writing is to get eyes on what you wrote. I argue that, for most writers, the goal is self-expression. If that drives engagement, cool. If it doesn't, the purpose has still been fulfilled.
If I were to provide an addendum to the OP, it would be this: consider the goals of your blog, artistic and otherwise. The answer to "what platform is right for me?" might be no platform at all.
If you make good art (or blog posts), people will find you, "platform" or not. The internet is cool that way. Eyes do not good art make.
I feel like the internet used to be "cool that way", but it's not anymore. You don't do stuff for "engagement", but you probably want some audience and feedback, otherwise why bother publishing your work at all. Nowadays almost all audience got sucked up by the black hole of social media and LLMs, and most authors just scream into the void.