Poetry isn’t about anything in particular; it’s about what the writer feels they should put to paper, and what the reader feels they gain from the writing. A poem is written from the heart, and read by others, and it then enters their heart, and they get their own interpretation of the poems meaning. Basically, I don’t need to tell you what this is about; you can work that out yourself. And the meaning will be different to some extent for every single person who ever reads it.