If it’s worth saying, but not worth its own post, here's a place to put it. (You can also make a shortform post)
And, if you are new to LessWrong, here's the place to introduce yourself. Personal stories, anecdotes, or just general comments on how you found us and what you hope to get from the site and community are welcome.
If I understand you correctly then your primary argument appears to be that a ban is (1) too harsh a judgment where a warning would have sufficed, (2) that curi ought to have some sort of appeals process and (3) that habryka's top-level comment does not provide detailed citations for all the accusations against curi.
(2) Curi is being banned for wasting time with long, unproductive conversations. An appeals process would produce another long, unproductive conversation.
(3) Specific quotes are unnecessary. It blindingly obvious from a glance through curi's profile and even curi's response you linked to that curi is damaging to productive dialogue on Less Wrong.
The strongest claim against curi is "a history of threats against people who engage with him [curi]". I was able to confirm this via a quick glance through curi's past behavior on this site. In this comment curi threatens to escalate a dialogue by mirroring it off of this website. By the standards of collaborative online dialogue, this constitutes a threat against someone who engaged with him.
If it’s worth saying, but not worth its own post, here's a place to put it. (You can also make a shortform post)
And, if you are new to LessWrong, here's the place to introduce yourself. Personal stories, anecdotes, or just general comments on how you found us and what you hope to get from the site and community are welcome.
If you want to explore the community more, I recommend reading the Library, checking recent Curated posts, seeing if there are any meetups in your area, and checking out the Getting Started section of the LessWrong FAQ. If you want to orient to the content on the site, you can also check out the new Concepts section.
The Open Thread tag is here.