Death Stranding is shaping up be an incredibly atmospheric, sandbox traversal-horror game with trippy sci-fi(and political) themes and one of the most insane death mechanics ever. If that doesn't interest you fair, but calling it "flat" is absolute non-sense.
I predict this will see a similar response in certain internet circles to RDR2 with it's deliberate pacing, sim systems, heavy ambient & environmental storytelling — people will call it slow, boring, a "walking sim", complain about not being able to fast travel everywhere, etc...etc...