If you report a death threat to the police and fbi it will be investigated. I think the problem is they have to be substantiated. If I just run around the town square saying “I’m going to kill you” that’s not actually a criminal death threat. So someone saying “#diaf” is not a death threat, it’s obnoxious but not a crime.
Fortunately murder rate is not correlated to internet death threats or we’d all be dead.
This doesn’t mean that platforms shouldn’t stop boorish behavior, but it’s not a crime and we probably don’t want the FBI investigating stuff that’s not a crime.
But when it is, when I think someone is going to kill me, I feel confident that I can call the law and they’ll do what they can.
[0] https://elkodaily.com/news/local/man-arrested-for-online-dea...
So it's technically correct to say that it's "just as illegal", but that's not the best kind of correct. While I'd be very interested in a directive that the FBI should take all violent threats online seriously, they don't have anywhere near that kind of resources. And I have a feeling that if they did start making numerous requests to unmask anonymous users, a lot of HN readers would oppose that as well.