> Any freedom you're enjoying with PF isn't there because Apple decided it was a good idea. It's there because Apple decided to build on BSD.

It’s there because Apple decided it was a good idea. If they didn’t think it was a good idea, they wouldn’t have included it. Your next sentence even implies this when it admits that Apple’s inclusion of PF is only a few years old.

> I'm actually surprised MacOS even has PF (apparently since 2015, enhanced from other BSD implementations).