Question about resting B face

Im a guy and I have been on dating apps for couple of years, during this time I have seen thousands of women who have chosen the INFJ personality type on their profiles

I would say about 50% of them have a picture or multiple picture with what is known as the “resting bitch face” or “INFJ stare”

Im curious what differs these INFJs from the other INFJs who doesn’t have this look?

Why do you think some INFJ have it and other dont?