> The Fediverse really could help if just somebody would implement such a comment engine. But that engine has to be deployed decentral. On each blog.
I’m really not sure what you mean with that. The old blogs generation had a pingbacks system, but it’s really not suitable for commenting: that is usually not moderated by the target, it requires having set up your own blog, it’s really inconvenient for discussions when you have to keep jumping through (unless you use a federation tool but then it’s back to centralisation), and it can be awkward to reply through a blog post as the reply might not rise to that level of interest to your own subscribers, plus the subject at hand might not be one you aim to cover in your normal posting.
the fediverse promises to connect across instances.
Imagine your blog is one, too and can receive likes and replies just like any other fediverse instance. Each comment is both on the commenters fediverse profile as well as under the blog article that it refers to.
Each microblog is a comment system – just reverse from what a blog wants.
The Fediverse really could help if just somebody would implement such a comment engine. But that engine has to be deployed decentral. On each blog.