The reason such things get flagged has less to do with Musk but with the fact that HN isn't really a current events/news discussion site. It's porous - some things are big and/or interesting enough to get front page coverage but the tick tock of everyday news stories is mostly offtopic and people tend to enforce that with their flags.
https://news.ycombinator.com/item?id=42901248
https://news.ycombinator.com/item?id=42901317
https://news.ycombinator.com/newsguidelines.html
"Off-Topic: Most stories about politics, or crime, or sports, or celebrities, unless they're evidence of some interesting new phenomenon. Videos of pratfalls or disasters, or cute animal pictures. If they'd cover it on TV news, it's probably off-topic."
2. There are a few additional automated adjustments, most notably site penalties and "Major Ongoing Topics" (MOCs) which attract a large number of submission may also have a penalty applied. Frequently dang will make mention of this, though you can email queries as well. See: <https://news.ycombinator.com/item?id=42911011>.
3. Where mods do get actively involved, it's generally to reverse or disable such automated actions, or user-applied flags. The automated systems work well most but not all of the time. (It's taken me some time, and a fair bit of analysis of HN, to reach this conclusion. The system's not perfect, but it's pretty good.)
4. On account of 1) above, there are topics which HN has difficulty discussing reasonably, and many of those are political. Generally, if a topic strongly divides a large fraction of readers, you'll find that posts and many comments tend to get flagged and/or downvoted (comments only). If you suspect this is abusive or is preventing cogent points from getting made, email mods.
Keep in mind too that there may be people who find any discussion of Musk on HN to be tedious and flag on that basis. Reading intent on flagging is at best a highly approximate pastime.
"Elon Musk staff has been caught installing drives inside the OPM office":
https://news.ycombinator.com/item?id=42903499
"Elon Musk's DOGE reportedly gained "full access" to the federal payment system":
I also understand that the HN algo has a feature where flamewar-esque threads can trigger flagging of the entire article.