"(e.g. BB theory predicted that CMB should exhibit the qualities of a blackbody —and behold, measurements show that CMB is indeed the most perfect blackbody in the nature that we know of)."

If cosmic background radiation is from infinite sources of light, redshifted off the visible spectrum, it would be perfect black body radiation.

"Then again, I would say that all properties are manifestations of concepts, and the manifestations are themselves within that very conceptual framework in which they appear, "

Or that concepts are manifestions of properties. Map/territory.

Radiation expands to infinity, while form coalesces to equilibrium. Both entropic.