It's like a skill we take for granted. When you see people with certain mental disabilities who can't regulate their words, it quickly makes you realize why self-censorship matters. It's a critical tool for keeping things from descending into chaos.
The question isn't whether self-censorship is necessary, but rather, how much is appropriate. I shared the example of someone who revealed a boss's affair during a team meeting. It was a moment of impulsiveness that led to serious career consequences, to put it mildly.