MUH sounds like the "God is the Cosmos" idea -- "Math is the Cosmos." The two words are two different descriptions. These two different descriptions are descriptions of one thing. In that light, we haven't learned anything new, because both descriptions are valid.

It's interesting that God, Cosmos, and Math all postulate their own infinity. To me, this suggests they are each ultimately undefinable.

This seems to bring us back to Kant and "a banana is a banana." Kant also said everything we perceive is located in space and time, and that is a function of our perception.

So maybe we could add that everything we perceive is "located" in math. If math is infinite, there is nothing to falsify that claim.

Words come from pointing at something to distinguish the referent from other possible referents. (A referent is the thing being referred to.) If you point at "Everything" you can't distinguish it from anything.

Heidegger called everything "Being." That's arguably the simplest description of everything.

The Galileo quote was exciting to read. It expresses the beauty of math. Thank you for writing this thought-provoking piece!