Many of these disagreements are Naturalness arguments, and of course, fine-tuning.

The popular themes that sit at the helm of Physics are Elegance, Simplicity, and Naturalness.

Because it does not conform to Naturalness, or their ideas of beauty in Mathematics, physicists have actually sought to poke holes in Quantum Mechanics, which has one of, if not the best track record of any theory.

Drawing on aesthetics, physicists are bothered by numbers that don't display Naturalness. In theory space, Naturalness means a low level theory shouldn't sensitively depend on a high level theory. However, it's also about certain numbers, their closeness to or distance from one, and their size in comparison to other values- that which is too large or small is undesirable.