Trevor,
Predigested food means standard surface-level popular information that has already been thoroughly worked over and presented many times in a similar manner. It is a bit like compiling excerpts from a breezy physics book that one would find in an airport bookshop and adding a little bit of imaginative speculative tangents which makes it a bit word-salady and some lineation.
Even if the poem attempts ironic self-reflexive meta distancing by referring to its own nature as predigested food, it still tastes the same but flavoured with old post-modern tricks.
There is some personal participation with the George Best motif, but that does not really need
all that theoretical physics wrapping around a basic emotional need like dreaming to fulfill wishes, because as it stands, yeah, George Best, but it could be anything substituting for the common motif of "sliding doors":
https://en.wikipedia.org/wiki/Sliding_Doors