Joseph – Surely you realize that the eruiv is not kosher according to ALL opinions, right? And that it relies on certain halachic compromises? (We are talking a community-wide eruv.) There were gedolim (probably including the Chofetz Chaim) who did not (personally) rely on any eruv, even though of course there were eruvin in Europe and life would have been easier if he did rely on them.
Would you eat food that was questionably kosher? If no, then why do you rely on an eruv that is questionably kosher?