The BSD licences are not copyleft, or indeed part of the GNU copyright regime.
Copyright is dead.
I remember hearing that in 1996 too.
It took a while for the DMCA to happen after Napster. But it indeed happened, and we all know the saying about history repeating itself.
By the time they came for Napster technology had already moved on. I can still download entire albums and movies in minutes 2 decades later. Heck, Usenet is still a bastion of piracy and that's been around for 46 years.
You may not care, but if the OS you prefer to run is the defendant in a copyright case, that's likely to impact you in a negative way.
"Those that do not learn history" and so forth.