I have. They're glorious.

But yes, my ex-bf who has a T-shirt that reads JEW-ISH is not trying to pass as nothing Jewish to see here, antisemites, pass on and hate crime the next person, he's making a statement about, as you say, a complicated individually negotiated relationship to an ethnoreligion. That he is actually pretty thoroughly claiming. It's just such a thorough misunderstanding of the situation.