You're right.
I'm writing.
I'm writing for me.
I also have crafted my own tool and way of working: Emacs, with Org Mode, a simple CSS and the embedded publishing function to create a few HTMLs that are not even a blog, but more a so-called digital garden.
Who read that? Dunno. Don't care.
If someone reads it and thinks it's useful I'm happy.
But I'm writing for me, to fix my ideas, my needs, to create my own brain extension, to keep track of interesting things I learn.
No for traffic.