Do you want to publish long form texts on the Fediverse?
You might want to try @writefreely, a writing platform which focuses entirely on the text and has a minimalist interface to reduce distractions. More info at:
...and servers to join at:
Because it's part of the Fediverse, you can follow Write Freely accounts from Mastodon.
You can also set up your own server to create your own blogging community.