Nice work, OP. Looking at the graph, I sure hope we did not hit "Peak HN" in Q2 2023.
Layoffs across the industry were already well underway when Musk completed his first round. I think some tech company execs were happy to use Musk as a high profile excuse, but investors everywhere were demanding layoffs/corrections as early as Summer 2022.
I'm not. But I don't think my industry is too represenative on what affects HN hirings. I've seen maybe 5-ish game positions on Ycomb job boards ever (they don't even have it as a category to filter into).