Wasn't there a study some time ago that said that a pony tail made you safer when cycling than just a helmet, because of this dehumanization effect (maybe dehumanization is too strong, the drivers were more careful, because of their biases)?
PS: found it https://velo.outsideonline.com/road/road-training/do-drivers-give-female-riders-more-space-when-overtaking/
In 2006, Dr Ian Walker found that he was given more space by passing drivers when wearing a ponytail wig.