Again, publishing his location in real time is not the same as publishing information about his life after the fact. Also I've seen a good argument that private jets often use small aerodromes without security, so it becomes a very serious security risk.
The same argument applies to privacy of private citizens. I, for example, do not understand why a flight that I, my small children and 300 other souls boarded in couch class can be tracked in real time, while Musk’s jet should be untraceable. As I suggested few posts above, Elon should lobby Congress, European Commission, Australian Parliament, King Charles III, Emperor of Japan on banning ADS-B.
It's not that jet is untraceable, it is traceable. The problem is with knowledge about who is on that flight. The difference with you flying is that it's not public who is on your flight. Also if you read previous posts Elon was using Privacy ICAO Address (PIA) but this guy still figured it and made public.
They are tracing Musk's plane---there is no guarantee that he will be on it.
Private aircraft often fly to various destinations, for varying reasons without the owner being aboard.
Sending it off to multiple strange destinations would be a good, if costly, counter measure---similar subterfuges were used in much more deadly situations, like General Montgomery's "double" being flown to destinations far from where he really was, during WW2.
This, of course, would only put off random Internet trolls.
Real "Bad actors" can no doubt do their own research, using either modern methods, or old fashioned spy work.