Stranger Things 4 is out, and there's a scene stuck in my head. It was when Max was fighting for her life running towards the way out amidst Upside Down chaos, Vecna throwing boulders to stop her, and her friends in the real world yelling at her floating hypnotised body to get her to come back to her. Running Up That Hill was playing throughout the scene, it was Max's favourite song, and her friends played the song to get her to come back to them. And she did.
I don't really have a favourite character but it hit me, because Max was going through depression from her traumatic experience, thinking she didn't deserve to live. But when it really came to the point where she was actually at the brink of death, she fought to live with that song as her talisman.
I think that's why the song regained popularity. Because I too, felt like Max. Want this life to end, but really, we just want to be saved.