It's not "valued" because nobody really wants to stand out, they would rather blend in either to fit in or for anxiety problems. Authenticity and self-awareness are factors that older teens to adults realize is what makes them themselves and special. Most teens in school don't have self-awareness, most due to stress/anxiety/ect and isn't really of interest at that age.
I hope I helped in some way, if you need a follow up, let me know! xx