I’m not sure why you think you think you don’t have to hold of the “daas Torah” of the yeshivish and chassidish gedolim, but we should hold of the “daas Torah” of the MO gedolim. That’s a double standard.
Also, the RCA is not the same as the moetzes. For goodness’ sakes, Avi Weiss is a member! If the RCA’s decisions were made by Rabbis Schachter and Willig, I would be more careful in my criticism, but as it is, I don’t see an attack on the RCA as an attack on them.
That thread with the MO teen was hijacked by MO posters trying to convince that boy that MO is the derech for him, when he clearly felt it wasn’t. The MO posters got very defensive.