Okay, that is super creepy. How could someone find out?
Using the IP addresses where cuban leaf posted from. You can run, but you can’t hide...
The same way the RIAA finds you so they can sue you for uploading music. It’s easy to find someone if you have the power of the law on your side. The exception is the guy that does “hard” stealth. Like I mentioned in another post: Dedicated laptop, only free wi-fi, etc.
And even then, if they want you bad enough, it’s technically possible to find you, though if they did it would probably make a good movie. Plus, it means you would have had to do something that makes it worth their time and effort.