What do you call a person who says these?

on youtube this girl named mysteriousgirlvoice2 is gothic and then her friend became gothic as well. but when nerezza (mysteriousgirloice2) has been gothic her friend's friends bashed on nerezza but when nerezza's friend became gothic her friends (the ppl who bashed on nerezza for being gothic) are all like "oh cool thats great" what do you call those people who are alright with one person doing something but not alright when someone else does that exact samething?