Yes, but a lax stance is only going to put us in a deeper ditch. We need people who will be hardcore, and even chauvinistic about European identity in order to truly protect the true European identity. You have to define what is indistinguishable from Ashkernazi Jews and Gentiles before you squeeze them into the same category.
If its merely cultural then I must say nein to the fact they are indistinguishable. If its because of phenotype, hair color, or eye color than I must say nein in part, because there are Non-European people with a phenotype that is pseudo-European looking. There are Non-European people with a blonde hair color or blue eye color, although this is relatively rare.
If you want to say Ashkernazi Jews and Europeans are indistinguishable based on a few aspects or a partial degree of their identity then you are cherry picking here. This is a fallacious use of logic to support an agenda or ideology, but it sits on shanty grounds with no firm intrinsic support.
If you want to say Ashkernazi Jews and Europeans are indistinguishable based on all the factors there are to calculate then there is no reason to admit or affirm the term Ashkernazi and European as disjunctive terms in meaning. Therefore a person of who is of partial Ashkernazi descent or who practices or believes in Ashkernazi traditions or mentalities can not be considered truly and wholly European.

