Nothing, not even a vacuum, is a nonelectrolyte, if the applied voltage is large enough.

The boiling point elevation happens both when the solute is an electrolyte, such as various salts, and a nonelectrolyte.

Solutions of a non-electrolyte will only give one particle per formula unit.

So the effect of an electrolyte is approximately double (or more) than of a non-electrolyte.

This is true in dilute solution whether the solute is an electrolyte or a non-electrolyte.

This is because ethanol is a non-electrolyte of small molecular weight that diffuses rapidly in and through biological membranes.