I already knew his critique to bitcoin wasn't accurate, so you didn't need to defend it. But I wasn't sure I was actually understanding his proposal and I thought it may work.
It leaves out the most important part of how to choose the group of "trusted" people.
This is key I think. If you need an authority to create mintettes, we already have central and commercial banks.
On the other hand, if you allow anyone to become a mintette, I alone could create current_size_of_the_network + 1 new minettes and control the network.
As I suspected, this cannot work. Not needing the proof of work was to good to be true.
Thank you guys.