HIE: Please re-read my post. Where did I say that I learned Eiruvin?
But I know that I don’t know everything and I don’t pretend to know everything…
Are you saying the eruv in Monsey is no good? Passaic? Yerushalyim?
How do you have the chutzpah to be cholek with the Rabbanim who set up those eruvim and are almost universally accepted?
Think about it.