I read the RCA’s statement. Maybe I’m missing something, but I didn’t see in the RCA’s statement that they side with Weiss. It said, “Recent assertions that the Rabbinical Council of America advised the Chief Rabbinate of Israel to reject the testimony of RCA member Rabbi Avi Weiss are categorically untrue.” That doesn’t mean they support Weiss, it means they didn’t tell the Rabbinate to reject him.
The RCA has made it clear time and time again that they oppose Weiss. They do not accept the “semichah” he offers as legitimate. They themselves do not accept his geirus. They have issued statements against many of his policies. In this case, they just wanted to set the record straight, that they did not tell the Rabbinate to reject him. That is very different from supporting him.
In the statement, they continued by saying that they think it’s wrong to make the geirus into much more than it should be, and that it shouldn’t be used to bring up issues about the definition of Orthodox in the US. I agree with this 100%. Deal with the issue at hand. Don’t drag other things into it.