There is a differnce between Avi Weiss and other leadership of OO and just a layperson.
if They wanted to condem Avi Weiss and say you cant drink his wine that is one thing. However if you say you cant drink the wine of someone who jsut happens to go to Hebrew Institute of Riverdale thats differnet , if someone goes to such a shul you need to act very differently . The lay person are not degenerating the torah, they are just following their leaders.