Trying to project a favorable image of oneself is rather normal, selfies and being able to immediately post them on social sites facilitates that common human trait. It makes many people happy, they are not, or at least not too crossly, harming anybody and they are having fun. Let them have it
Using expensive or expensive looking dress, accessories, cars, gadgets, or name dropping asf. asf. are all driven by the same idea. I am very critical of this focus on outer appearances in case someone identifies with them which typically entails pride and putting others down. In essence I don't see that being different to the rather playful and light spirited selfie culture which not necessarily is that exclusive and possibly more truthful.