Could you please elaborate on "Symphony is a joke"? Based on the little that I've read about it, it's pricing structure and the slew of mega banks behind it see

Could you please elaborate on "Symphony is a joke"? Based on the little that I've read about it, it's pricing structure and the slew of mega banks behind it seem to make it a good choice for Terminal customers who use it just for the chat (IB) functionality. Thanks.