After playing around for a bit, this really looks like the best option. I will wait until federation support gets added to the self-hosted version though.
Some people use Lemmy. If you create a community and set it to moderator only mode you'll be able to post updates as new threads that are federated without random people starting conversations outside of the posts.
I wanted to try WriteFreely, but their federation seems to be broken according to this ticket. And the fediverse observer shows 0 WriteFreely comments since January 2025.
I’m not sure what version they’re running on their flagship but I last posted from there on March 20th and my blog federated to Mastodon.
More for the OP but if you’re looking for a blog with a comment section, I wouldn’t recommend WriteFreely at present. Customization is also unnecessarily painful.
It does federate. Social features are rudimentary. I end up using my existing microblogs to promote the posts anyway.
I knew all that going in and chose it anyway. It’s not for everyone but it does what I need it to at a price I’m fine with.
For me federation is working to mastodon, but I don't think comments are really out yet, but I use cactus comments for it, but that doesn't federate to mastodon, it federates to matrix. It also requires a matrix server, which was a total pita to set up.