Well, probably Ethan isn’t all that observant anyway, since he is dating Jenna Morasca, a known shiksa.
Your nerd-lust-fu is weak. According to his bio on CBS, he attended a Catholic high school. They don’t usually let a lot of Jews into those schools. 
Perhaps not “a lot,” but there isn’t necessarily a prohibition. I had a friend in high school whose younger sister, despite being Jewish, chose to go to an all girls Catholic high school because it happened to be the best private school in the city and she could get a superior (no pun intended) education there.
And as a matter of fact, the admission requirements from the school Ian attended specifically allow for non-Catholics:
My nerd-lust-fu makes me weak. 
But, I will use my own self as an example. The Catholic high school I was supposed to attend had four Jews and a Mormon in the Class of 1992, the year I graduated. One of those Jews is now studying to be a Rabbi, if he isn’t one already. (I went to the public high school so I could be in the gifted program, but everybody there thought I was Jewish because of my name. Which I how I know the “name test” is notoriously unreliable.)
Okay, okay, you all win. I’m wrong. Jews go to Catholic high schools all the time. Just not in my neck of the woods. 
When one considers Morasca’s behavior the season she won, it doesn’t say much for his taste in general. I hear she’s grown up. For his sake I hope so.
The lack of Jews does not surprise me. I’ve always thought we had much better ways of earning a million bucks than to sunburn and eat bugs. ;j
Yeah, the name test is unreliable, but Ian Rosenberger??? Slap a yarmulke on him, he’s a yid.
(For those of you who may not be aware, Ian may be a Welsh(?) name, but it has become a very common first name for Jewish males under a certain age. Many Jews follow the tradition of naming children for deceased relatives. And if the deceased relative of choice has a name considered unsuitable for the modern era, the parents will give the kid a name with the same first initial. As an example, my name is Elizabeth, and I was named for my great-grandmother, Eva. Anyway, there are a lot of deceased relatives out there named Isaac/Itzhak, Ira, Irving, etc., and not too many boys names that start with I. So a lot of little boys ended up with names like Ian Rosenberger.)
Perhaps, but … like I said, people always used to assume that I was Jewish. My maiden name was Rachel Haldaman. I am not Jewish, as far as I am aware. Born, raised, baptized, confirmed, and married Catholic. Sounds like you know more about this than I do, though, so I will defer to your judgement.
Naw, I’m just talkin’ out of my proverbial ass. I mean, it’s true what I said about lots of Jews named Ian, but your guess is as good as mine as to whether Ian on Survivor is Jewish or not. You’re right that your name did “sound Jewish,” but Rosenberger is more strongly Jewish than Haldaman. But who knows.
A friend of mine has a Jewish sounding name, looks Jewish, and works for a Jewish newspaper. But he’s not Jewish. Not a big deal, but leads to some funny situations. On his first day working for the Jewish newspaper, he went to the deli across the street with some of his coworkers. He didn’t realize it was a kosher deli, and asked for a turkey and cheese sandwich. They refused to make it. So he asked for a turkey sandwich. And then asked for a 1/4 pound of cheese. They refused to sell it to him. He asked why not. The counter person said “Because I know what you’re gonna do with it!” :smack: ;j
Well, wait until you hear this part! My married name is Gonzales, so now I get a lot of, “Oh, you’re light skinned for a Puerto Rican.” Which … gaaah! It’s my married name, der. Plus, my husband is Mexican.
Anyway … off-topic. Sorry.
I find that a lot of what we USAieans consider Jewish names are really German names because many of the Jews in the US came here after WWII.
Or, like Green Bean, I could be talking outta my ass.
Thanks for the laugh!