Oh no, a billionaire felt bullied because someone posted public flight tracking data on social media? That’s nowhere near the bar for “targeted harassment”. You know what is? That same billionaire has been calling people pedophiles in a targeted attempt at character assassination.
I think it's also obvious that this jet tracker doesn't exactly aid in the public discourse, it seems far closer to targeted harassment..
Again, I don't think anything should be banned outside of direct threats (I'm a free speech absolutist). But it does seem clear, even from that tweet by Musk, that that twitter account seemed to impact his personal safety.