You can tell they have little confidence in it already because it's called "God of War", even though the God of War in that realm was Thor and not Laufey. You could have squinted a bit and have Kratos pass down the title to Artreus and still keep the "God of War" title but this just reeks of laziness. You could even squint even further and even listen to "we need a female protagonist" and have Freya pick up the "God of War" mantle from the recently deceased Thor instead of going all the way to Laufey.
Which is honestly a shame because having a character who doesn't fight exactly like Kratos could be fairly interesting but a clearly uninspired side-story with no weight (Laufey isn't dead! The mysterious world that Odin spent eternities finding is just right here!) and a talking cube and sword sound horrible. May as well actually just have fucking Pickle Rick instead.