But this says nothing about meaning within this framework. "Concepts"/entities/units within the framework have meaning precisely because of the relations inherent between the entities and states within the framework. The ultimate source of the framework is not relevant.

The entities in the system do not "get" meaning because of a conscious observer, they get meaning because of the relational properties between the entities. If every person in the universe suddenly died, those meaningful relationships would still be valid. After all, the relationships entailed by math is true regardless if anyone is there to recognize them.