I’ve been taking crisis deescalation classes for a decade and got certified to teach them this year. I’ve had classes that teach this as a good posture to keep because it keeps your hands visible and ready to cover your face. To me it reads as extremely dishonest. I think there’s a bit of an art to it and everybody’s ideal stance is going to be a little different depending on their style of interaction, but that’s definitely not one that would look good on me.