I answered that in my original post: "I understand that there are other options (reset password to random gibberish, run a script to delete my comments[, or, third option I'm inserting now, which seemed obvious to the point of not bothering to state it, just stop using the site]) and none of that would provide the catharsis I aimed for so I'm still here, for now, I guess."

Oh, you just want to complain.

I don't think it's unreasonable to complain about HN not having the same functionality that every other social media site has.