An Incorrect Generalization

The assertion: “ in the context of General Relativity, there’s no way to explain what we observe with the physics we know today” is not true.

Here is an example of the observed cosmological expansion explained within the context of General Relativity, without the need to invent exotic particles, fields or forces.

ADIOS DARK ENERGY?

If the cosmos is FAR larger than we assume, and has turbulence on scales 100,000 Mpc (and possibly much more extensive), one would expect small regions like our observable universe to undergo periods of acceleration and deceleration.

Is it possible that our thinking is too provincial, and unjustifiably sure of itself?