So true! Just to show how much so, here’s another hypothesis!

Time dilation! As time itself emerges from space/gravity, mass and distance could introduce a “time dilation” fudge that cosmologists attribute to “dark energy/matter”!

It may be our lack of understanding of time itself that changes factors of how we calculate the cosmological expansion/contraction and other mass stability estimates.

I too find it funny that we can wrap up our ignorance into a concept and call it dark*(whatever)!