Knowing this, I managed to find 2 additional things which help strengthen this connection as not just being some random twitter account with a matching name:
- https://news.ycombinator.com/item?id=38840473 where it doesn't actually link to the Twitter to see what the content is but he doesn't bother denying he'd have a Twitter account that could be taken that way.
- https://archive.ph/pJqzD where someone acknowledges they interacted with the account knowing it was really him as part of sharing their discovery of the news.
Much thanks, I would never have thought to look for such an unhinged Twitter account for a seemingly above average HN user being praised long after his death.