This is a universal issue. Many comments people make are clearly for anti-semetic reasons and some just grab at any reason they can think of to oppose any change. Sometimes, their concerns are understandable and impact the quality of their lives, like putting a chicken processing plant within or near a residential community.
At the same time, everyone, including Frum Jews want to maintain the character of their communities and will resist any change.
Siting economical reasons of stores being closed on Shabbos or Jews not spending money on Shabbos, is ridiculous. Do any of us spend less money because of it? We just spend it on different days. That’s an example of grabbing at straws in an attempt to justify an absurd opinion.
Bottom line, we should also look at things objectively and put ourselves in the other person’s shoes to see if they have a reasonable concern before we jump to the anti-semetic card.