To throw my own (admittedly niche) Catalina anecdote into the mix: In El Capitan, Apple introduced something called System Integrity Protection (SIP). This is a security layer that prevents you from doing certain things, like modifying system directories, even as root . The idea is that malicious software could gain root permissions and still be unable to do the most egregious stuff. Okay, fine. You can turn it off b…
https://mrmacintosh.com/google-chrome-keystone-is-modifying-...