What I’m turning over in my mind is whether permanent quarters are feasible for large numbers of ancestral people before the birth of agriculture. Not sure how many places would have prey to hunt and edible plants on a year-round basis.
A well-sited place would be used as a camp by any groups passing through. So now it could exhibit the signs of a ‘permanent’ site but would have been occupied only temporarily by different groups over and over.
Possibly that’s the case here.