I’ll back you up on this one, I grew up in a (relatively) very Jewish area of the US, enough so that during Passover my high school served Kosher meals. I at them over the normal meals when I could , mostly because they were of a significantly higher quality for about the same price.
I at a a few different Jewish delis that served Kosher.
Where I live now doesn’t have a Kosher deli near me, but there is a Halal butcher that I do shop at from time to time since it has better better selection of non-pork meats than the closer or more convenient stores with meat departments.
So I’m not Jewish, but I do occasionally eat that way because it’s how I remember eating occasionally when I was much younger.