I didn't delete it; I downweighted it. You're running into the pagination problem (https://news.ycombinator.com/item?id=23184485), which is that you've confused the first page of comments with the entire thread. Click More at the bottom and you'll find it perfectly intact, just lower.

We don't delete things outright on HN unless the author asks us to. The most we ever do is 'kill' a post, meaning it's still visible to anyone with 'showdead' set to 'yes' in their profile, and even that's rare. Beyond that, we'd never kill an entire subthread with dozens of replies. We might downweight it or we might auto-collapse it. That's all. By the way, if I had actually deleted that thread, you'd not have been able to find it via my profile. I'm not sure whether to be more hurt by your assuming I'm such an evil censor or such a bad programmer. (<-- that is an attempt at a joke)

It's routine HN moderation to downweight off-topic subthreads, especially when they're at the top of the page, and especially when they're indignant+offtopic: https://hn.algolia.com/?dateRange=all&page=0&prefix=true&que...