Don't get me wrong but, would a "do not use FB or Facebook in your extension name" reply be such difficult to respond? In my understanding, support is there to help users (developers in this case).

I agree that the developer should have guessed that by himself, but the real issue here I believe is the lack of any useful response, the automatic takedown of the extension and no way to get any response after "expending" the apparent "two tries" that you get from Google when something like this happens.