We always deal with an observer in physics, implicit or otherwise. And this observer as we usually deal with is not of course considered to be the whole universe. Some quotes might make the point clear:
A consistent physical interpretation of QM formalism can be given only if we divide the physical world into two parts: the system under study, represented by vectors and operators in a Hilbert space, and the observer placed in the rest of the world, for which a classical description must be used [Peres, 1977]. We must impose this 'cut' (Schnitt) dividing the world into two parts, or else QM will be simply meaningless [von Neumann, 1955].
The problem arises when we note that the observer is itself a part of the physical world and this scheme (usual QM) doesn't permit talking about the state of the whole world.
I'm concerned that this issue is not a solved problem in current physics, and as it's pointed out, apparently the time has not arrived for the common thought to accept problems related to consciousness and alike arguable in areas other than philosophy or psychology or religion.
The only reason I started this topic in physics forum was to check the above point. And I do accept your objection.