1: Name the Rav. I can name many “rabbonim”, and even claim to have spoken to them and make claims in their name.
2: R’ Menashe Klein when he issued his psak for eruv in brooklyn, said it is kosher eruv and 100% muttar to carry within it, not “kosher bidieved”. In his opinion, it is a perfectly valid eruv. You are free to disagree.
I am not taking sides on the psak, just taking issue with the free use of the term “kula” and its careless (or subtle) use casting aspersions on poskim.