It's an interesting article, indeed, Jim! (I remember a previous article about the same subject from you.)
But I wonder.
The astronauts are in weightlessness and can move equipment much more easily than on Earth in such a way the narrowest side would first pass the hatch. Humans too can cross a narrow hatch head first rather than with the whole body. If they bump on it, well they should slow down.
Narrower hatches should be easier to shut in case of emergency (Spektr depressurization)...The CEV won't have a large hatch either.
Yes, large doors allow for larger equipment, but that is a matter of design.
There should be some relationship between the size of the station, the size of the ferry vehicle, the manned spacecraft and hatches should have the same size everywhere, if only for safety and economical purposes.
I understand why large hatches are a solution but weightlessness and vacuum outside can offer other possibilities.