In the westhampton case, those stores need to make their entire yearly income in about 12 weeks and a good chunk of that on Friday , Saturday and Sunday and Since shopping on friday and Saturdays nights is out, it is not good for those businesses. its also not good for business if you own say a restaurant and orthodox people will not patronize it.
In Kiryat Joel’s case there are concerns about things like sewers which are maintained by the county and have capacity issues.