“I believe that when the inyan is eruvin many people believe that one has to follow the opinion of those whom they crowned as a gadol and not just an ordinary rav. This is why the rabbanim who support the eruv needed a campaign to educate the public that there are many reasons to allow an eruv (even for their own constituents).”
Regarding this issue. Who had to be educated? Those who followed the minhagim of Yeshiva “X” certainly knew the psak of that yeshiva, same for those who followed Rav “X” as well as those who followed “Rebbe” X.
If it was targeted at the thugs who kept pulling down the eruv, then mass mailings to entire neighborhoods, in the hopes that some of the thugs would get the mail, was a poor strategy.