Is HN suppressing negative posts about Elon Musk?
https://github.com/vitoplantamura/HackerNewsRemovals might be helpful for tracking some of this, feel free to bookmark.
https://news.ycombinator.com/item?id=39231537 is helpful to understand some mechanics of the above.
Let "You shouldn't flag things just because you don't like them, but you should flag them if they go against the site guidelines." be your guide.
(as pvg's links to dang's comments mention, this is not HN/mod action; this is user sourced moderation activity)
https://news.ycombinator.com/item?id=42777298
https://news.ycombinator.com/item?id=42775648
HN works based on flagging. If a few users flag a story, it gets hidden. The algorithm errs on the side of being safe than sorry.
There isn't much room for discussion or any real 'question' to get into on that particular story. Many, perhaps most, would rather not lend validation to it and move on. And the rest, well, as mentioned, the discussion devolves into insults and weird 'othersideism' and well, doesn't go anywhere.
An alternative option is also you're welcome to bring it up/seek to address it further, or even flag, the numerous Musk/Telsa/X related stories that come up around here elsewhere.
Anyway, to me it's obvious Elon was overly enthusiastic and emotional ("My heart goes out to you"), as he was when that astronaut chided him. To some it's not. I guess we know when he keeps saluting in this way. Until that time, cool down everyone.