On "Josh" and "Seth"

I will admit that I first read this reference to TV writers as "white dudes with names like Josh or Seth" as a bit Jews-control-the-media. But then I thought about it and wasn't sure. Is Seth a Jewish name in this context? Maybe yes, maybe no. (I have no Jewdar, as Seth Adam Meyers is apparently not Jewish.) While half of all Jewish men of my generation are named Josh (I exaggerate, but slightly), it's just a common name all-around. Right?

But if not "Jewish," what are those names meant to indicate? "White," maybe, but since that's already in there, it would be redundant. But these things are complicated. If I can't say offhand whether "Seth" and "Josh" mean "Jewish" to most Americans, how on earth do I know if this Jezebel writer (whose name only tells me "female") is or is not someone who'd even know that these names would read that way to many people, that this would fit into a really fundamental anti-Semitic accusation. And not just some accusation one reads about in history textbooks - I've seen this criticism recently regarding the writing staff of "Girls" - that the show is not merely white but Jewish apparently does the opposite of mitigate the problem for some observers. Hmm.

Back to Jezebel. A reply to a comment calling this post anti-Semitic is both helpful-ish and itself possibly offensive: "This tells me that you have never been in the US of A ever. Josh and Seth are pretty stereotypical White non-Jewish frat boy names these days, just like Zack." The second sentence, helpful. (Old-Testament first names are confusing! If you're Jewish and you mostly know other Jews, or know mainly Catholics, these sound to you like Jewish names. And then you start wondering whether all the British Davids and Rachels could possibly be Jewish, and you realize, ah, Protestants!) The first, purest anti-Semitic assholery - a provincial American Jew from whichever Jewish coastal/suburban enclave is just as American as a provincial Methodist from Kansas. Ugh that this needs to be pointed out.