I personally don't think the new track is a rehash of the past three albums.
The lyricism on the title track, while being most similar to the lyricism on Blue Banisters is still quite different from songs on that record too. More use of extended metaphor, less cliches, and a little bit more stream of consciousness in a way that has only really been explored in "Blue Banisters" and "Hope is a Dangerous Thing" (which both songs sound VERY different from each other). Sonically, I guess I could see how people would think she's just rehashing the sound from Norman onward, but I still don't fully agree with that because she creates a different world on every single album, and I can't imagine the title track fitting on any of them. That's the most important thing for me as a listener; her music might not be a complete reinvention every single album, but as long as I can still distinguish between each record and the world that she makes for them, I am more than satisfied. Norman has a beachy, soft rock aesthetic, Chemtrails has a folky, midwest vibe, Blue Banisters explored a more personal world of her home life, a world of stability and how her family and loved ones have shaped her career. Did you know that there's a tunnel under ocean blvd, with what we know so far, seems to be more psychological, stream of consciousness, going beneath the surface of how her aesthetic sensibilities operate in a diaristic fashion. All of these ideas and aesthetics are unique to me, and I can't seem to wrap my head around the critique that she's "making the same album over and over again" except in a more personal, honest writing style as opposed to the storytelling approach of her earlier career.