Why do so many elements of maths not relate to the physical world at all and why do universities pay people to make it?

Why do mathtards claim if I can show you a math proof it must have some physical application? Yeah sure pythag can work in N dimensions but does that mean an infinite number of dimensions exist? According to Mathtards yes, despite there being zero physics evidence for it.

What happened to abiding by the scientific method? Why is string theory so popular despite having zero physical evidence? Is it just popsci being retarded?