My interpretation of this song is that it has a lot of influences like you discussed but that the feedback about her relation with Matty which resulted in the speakupnow and even worse the fan union were the catalysts. But it's not only relational, it is also to how people treat her when she goes somewhere like Jack's wedding, making it hard to live a life. Oh the self Jinx at the end!
My interpretation of this song is that it has a lot of influences like you discussed but that the feedback about her relation with Matty which resulted in the speakupnow and even worse the fan union were the catalysts. But it's not only relational, it is also to how people treat her when she goes somewhere like Jack's wedding, making it hard to live a life.
Oh the self Jinx at the end!