Fury Road was certainly not a cash grab, but a prequel to the blockbuster of the 10s except with a female lead definitely smells like a cash grab.
And AFAIK this is built almost entirely off the extensive character background notes developed while writing her for Fury Road, so it’s not like they just cooked up this story because they needed something.
It also feels thick with influence and fluency in cinema per se, in a way that Fury Road didn’t to me, and I think it may mean this one rewards repeat watches to an exceptional degree.
Also they often don't seem to have a clue what kind of living legend George Miller is.