Make all the 100 page posts and diagrams you want. From what I've seen, they usually look something like:

Why is R=U true? Because of some particular reason.
Why is that reason true? Because of some other particular theory.
Why would that theory be true? Because of some other reason.
And so on.

100 page posts and diagrams show all these ridiculous amounts of unproven reasons and theories that supposedly prove R=U. From what I've seen, they usually just end up referring back to a previously stated and unproven reason or theory. Since all of those unproven reasons/theories rely on other unproven reasons/theories, you end up getting nowhere.

Not to mention that if Square really did intend for the player to think R=U, it probably wouldn't require diagrams and lots of proofs and reasons that are several pages long.