Billie Eilish - Getting Older Lyrics Meaning

I personally think its about her journey in the music industry and about how she became a star at a young age and growing older and about the dark side of the industry she's been exposed to. What billie said: “very revealing song talking about things that I only at the time had just felt I realized about myself and felt insecure about and wanted to talk about. I don’t know, I think that that happens a lot and it should be completely welcomed, is realizing stuff years later. You sometimes don’t realize what’s going on around you until a really long time later or realize what you feel until years later.”