It is just theoretical math unsupported by experiments.

Math is a language to describe how things works. As with any language you could say any bullshit on it. Simpliest example is Banah-Tarsky paradox. Mathematically you could prove that you could slice any object into infinite parts and then assemble two identical objects from them. Math is correct, but it is just "a bullshit told using math".

Any theory should be proven (or disproven) by real experiment before accounted as valid (or false). Until physical experiment it is just unproven theory.