You're right.  I can admit that saying "who cares what they think?" might not have been the nicest or best approach on my part.  

My thing is though:   If the liberals really looked to the "Orthodox" (or Eastern Rite Catholics) for liturgical guidance... we honestly wouldn't end up with the types of "liturgies" we see in most Vatican II (Roman) parishes.   

Also, more importantly:  I don't agree with the common perception that before 1054, there was one great universal Church, which then split in two, as if both sides are now incomplete.   Rather, the "Orthodox", because they reject the papacy established by Jesus, are in serious error and outside the unity of the one Universal Church established by Jesus.   This is not to suggest that complex factors didn't contribute to the schism, nor that Catholic leaders at the time were perfect or didn't maybe even help the pave the way for it.  

But the bottom line is:   The "Orthodox" are unorthodox & reject papal primacy, & need to convert.