The answer is that his synagogue is as fringe about Judaism as Levin is about Israel.
His synagogue is Congregation T'chiyah, a Reconstructionist synagogue. According to the 1990 National Jewish Population Survey, only 1% of Jews identified as Reconstructionist at the time. Since then, the survey has lumped them in with "others" which are at 4% total. About 2.5% of American synagogues in 2002 identified as Reconstructionist.
Either way, they represent a tiny slice of American Judaism.
The founder of Reconstructionist Judaism does not believe in a personal God. He defined God as "the sum of all natural processes that allow people to become self-fulfilled." This is not mainstream Judaism, or mainstream religion.
Levin's congregation describes itself in progressive word-salad style.
At this time, services - when they are held - are in a rented room of a Methodist church that is also considered progressive.
Their calendar does not mention Tisha B'Av this coming Sunday. Instead, they are having a yoga class.
My point isn't to slam Reconstructionist Judaism, although I strongly disagree with everything about it. I'm just saying that all the people who pretended that Levin was some sort of SuperJew for being the president of a synagogue are gaslighting the Jewish community, because a synagogue like this - that says nothing about Israel on its webpage and in its programming - is not at all mainstream.
