If one wants to write down thoughts, no computer is necessary. Keeping a journal with pen and paper has been a thing for centuries.
Blogging being less write-friendly? It can be as simple as writing a tweet, or editing a comment for HN. It doesn't need to involve git or hugo. You could use one of the big blogging platforms, and have no more than a login and some HTML text fields.
Blogging as pressure to improve your writing is real, and that's one of the reasons I blog.
So you need the scrutiny of others to feel pressured to write better?
Others? Only a handful of people read my blog, and most of them are my friends.