Well, media isnt just consumed by stable adults. A lot viewers are underage and have limited live experiences. A lot of women in my age group wanted to be a MPDG so badly, which is also interweaved with the cool girl and the "not like other girls" trope . It was the perfect opposite of the "anti feminist" stereotypes like housewife or mean girl characters. And it is actually ridiciulous how long this is a very huge fantasy for a lot of women who are attending colleges.
But is not possible to keep up with the always bubbly front and wearing artsy cloths and travelling around is actually quite expensive. So no, there are stereotypes that are influencing pop culture heavily, I think it is a little bit naive to believe that media and art isnt influencing how people are perceiving reality, especially if you are an artist.