I think the really interesting thing about the Backrooms is it is completely pointless. It doesn't mean anything. If heaven is ultimate meaning, and reality is matter and meaning together, then the Backrooms is "matter without meaning." It's a random and jumbled assortment of memories copied without context, but because we as humans are desperate to find meaningful anywhere, we become fascinated with its supposed importance and mystery even though there isn't one.
I love reading ‘theories’ of Backrooms, a film so straightforward in its messaging that it has an epilogue explaining to you what happened and where everybody stands in relation to the mystery