It’s not really fair to say the community where this polio case occurred goes out of its way to spread disease or that they’re stupid. In fact, you should probably take caution in saying that because people might assume you are being anti-Semitic.
The ultra-Orthodox Jewish community doesn’t intentionally spread disease. They have large families living in close quarters, often in homes with three or more generations.
They also gather in crowds for worship and celebrations frequently. I believe a fairly high number of people from their communities regularly travel internationally, also.
None of these practices are bad or wrong, they just tend to increase the risk of infection and transmission of contagious illnesses.
The same community was a big Covid hotspot early in the pandemic and has been the site or origin of some of our largest recent measles and mumps outbreaks in the U.S. It’s not super surprising that if a case of polio were to occur in the U.S., this community is where it would happen.