All the technological advances rely on our understanding of how matter interactions at the atomic and molecular level work, and the nuclear technology advances on how the interactions of nuclei work.
It is not enough to see that electrons' double slit interference can be described as the result of a probability wave, to get at the point we are. A consistent and valid mathematical model, a physical theory, was needed. This theory is the theory of quantum mechanics and the fact that all calculations give probability distributions is within the axioms( physical postulates) of the theory.
Quantum mechanics is continually validated not only by the technology, but by all new experiments at the frontier of physics searches. The question
does it REQUIRE that electrons behave as % probability
has the answer: all matter has to obey quantum mechanical equations, which come up with probability distributions for experimental numbers.
One cannot pick a theory a la cart, it is either obeyed whole, or invalidated, and this has not happened to quantum mechanics.