You can mail such questions to hn@ycombinator.com although this one has been addressed in some of the recent mod comments.
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.