If planes crashed at 10% of the times sterile cockpit rule was broken, there wouldn’t be many pilots, passengers or planes. It’s a good rule, makes sense especially in a busy environment or low weather, but it’s not almighty God, either.
You are right but if you break a rule, then another etc. Where does it stop? Its easy to say that I know my limits but so did all those pilots who crashed. Why not just follow the rules? Why not have a sterile cockpit when required?
Let he who is without sin cast the first stone. I never, and most us, never said go ahead and break the rules, we certainly follow them, but can you truthfully say you’ve never uttered a non-essential word below 10,000’, never been one knot over 250 below 10,000’, never exceeded 200 knots underneath the Class B?
Everyone makes mistakes. When you do it on purpose its not a mistake anymore. This is my point. That tirade was not a mistake.
Its normal to go little out of the envelope. Like pilot saying "Beautiful scenery out there". No problem there. Its really not a safety factor if it stays there and the pilots don't get distracted by starting a conversation of the scenery.
"never been one knot over 250 below 10,000’" That's not a good example and you know it.
Make it 270 below 10,000’ and descending. Do you contact ATC and let them know? Do you stop descending and reduce speed? Or do you just hide your mistake? See the difference? This is what many here discuss. Unfortunately many pilots take it personally what it is not.
95% of pilots are good and work professionally. 4% are not so good but work professionally. So when that 1% screw up, why defend their mistakes, stupidity, what ever? That doesn't help safety.