Is it normal to start a cult after learning theology in a university?

1) What is "mathematics"?
Answer: Mathematics are various abstract concepts.
Using one or more abstract concept(s) to "prove" another abstract concept, doesn't "prove" anything. This is similar to, 'Two wrongs don't make a right'.

2) Bullshit. There is plenty of factual evidence that we do, in fact, exist. But you can't or won't accept the factual evidence, because you have been thoroughly brainwashed, and can't or won't accept the truth, for some unknown reason or lack thereof. Instead you continue to believe some archaic nonsense, bullshit, bafflegab and claptrap.
I could explain to you how all this had come into existence, in probably as little as two weeks, but instead you can't or won't accept the truth, and opt into believing some archaic nonsense, bullshit, bafflegab and claptrap.

3) Quantum entanglement is an abstract concept. It is the subatomic particles that actually do exist; and quantum entanglement is a real or perceived behaviour of some subatomic particles, in some circumstances.
Quantum Physics is a set of abstract concepts, that is a theoretical tool, that had and might still lead to discoveries of previously unknown things; but this does not necessarily mean that everything theorized in Quantum Physics, is actually true, or real.

4) No, I actually did thoroughly research all these things.
But as it turns out, our current model of Physics, is fundamentally incorrect. I could prove this to you in a myriad of ways.