<https://news.ycombinator.com/item?id=37256792>
A general search showing links to rationale / reasons: <by:dang please don't https://news.ycombinator.com/item?id=>
You can also typically search Algolia for "by:dang" + the text used to describe what guideline was transgressed.
As I've noted elsewhere, HN operates on frictions and nudges: <https://news.ycombinator.com/item?id=37137757>
And you can always email mods for clarification, as has been noted several times already in this thread. Dang explicitly includes this option when banning established accounts in many cases.
In large part though, HN presumes adult behaviour, which includes the ability and inclination to research for yourself what you might have done wrong.
If you don't mind a late addition, it's also responding to comments as written, and not as one would prefer for them to have been written, as you're raising an objection not grounded in what I'd said.