Let's see if its really that simple, reachable and affordable such that any mildly disgruntled oaf can do in an impetus.
_This aircraft (xxx) is not available for public tracking per request from the owner/operator._
Which proves my point.
A motivated stalker will dig in and research but that’s inevitable, but the other 99.999% losers will self-limit to whatever is available for the minimum effort.
This translates to harmless yelling at clouds, unless some cheeky troll does the homework for them.
Build a receiver with a Raspberry Pi
For under USD$100 / EUR€80, build a Raspberry Pi with a USB ADS-B receiver that can run dump1090 and PiAware. View data locally or via FlightAware Users that share data with FlightAware automatically qualify for a free upgrade to an Enterprise Account.
Perhaps you've forever lived in an academic/industrial bubble, but a significant part of the population and definitely the vast majoirity of those that would engage in taking a virtual confrontation to IRL, are borderline illiterate, have significant difficulty parsing simple manuals. You're describing setting up a computer with Linux, configuring an SDR and configuring some software to parse the data stream.
To most people, that's lunar...