Schrödinger and electrical measurement issue
Schrödinger made an statement about a quantum mechanical system. So I disagree your conclusion "This is also true in electronic nowadays." because in common electronic systems QM effects are not observed directly; i.e. other effects are more dominant (by several orders of magnitude) than the QM effects you are referring to.

So normally there is no need "to compensate this lack of precision" because it doesn't matter at all.

E.g. normally no QM effects prevent you from measuring voltage arbitrarily accurately without affecting current (many other effects you will need to overcome; but they have nothing to do with Schrödinger's statement).