It’s interesting to note that Avi Weiss’ article is not written as from an RCA member but (Rabbi) Avi Shafran’s articles identify him as Director of Public Affairs, Agudath Israel of America.
Back to the question at hand, if Avi Weiss publishes an attack on the RCA not by name, it’s fair for the RCA to publish an attack on Avi Weiss not by name.