Don’t be objective about your subjectivity
“Morality is just social convention, so torture isn’t wrong.” Hearing that thought was a sobering recent experience, especially when you’re trying to get people to care and worry about existential risks. But that’s just a vivid and extreme example of a more commonly expressed sentiment:
P: “If there is no objective morality, then anything goes.”
Now, call those who express that sentiment P-expressers. Who are these people? In my experience, these are individuals who have subjectivised their ethics, but not their meta-ethics, and ended up nihilists as a result.