It should be noted that a large portion of the aforementioned anti-semitism, and indeed the strongest component of said anti-semitism, is by non-Orthodox Jews embarrassed by Orthodox Jews who effectively are self-hating Jews who hate their Orthodox brethren.
In Westhampton this point is especially true. Those opposing the Eruv the loudest and the strongest are all Reform Jews. And, yes, they oppose the Eruv because they don’t want Orthodox Jews moving into their town. Opposing Jews from buying homes and moving in to “your town” because they are Jewish is perhaps the most prototypical form of anti-Semitism.