Like with every redesign everyone will eventually get used to it and completely forget how the old one looked. When the next redesign happens everyone will rage the same way and say they want the "old" design back.
That's because the switching cost is less than the payment of inconvenience. Plus the inconvenience isn't permanent... it fades as people re-achieve workflow parity with the previous design.
This happens with every redesign so no, your assumption that complaints automatically means it's a bad design is wrong. Just wait and see. It won't be long until everyone (including you) have completely forgot about the old design.
The difference is that it's about a service you use a lot so you automatically get conservative and defensive about the design. This is no different than people joining groups on Facebook "WE DEMAND THE OLD DESIGN BACK" every time they do a redesign.