If you had a memory for detail
You'd remember sending humans is only part of the task and while the issues raised due increase the fuel requirement for human travel beyonde mere delta v considerations they don't mention that the consumables during travel are less than half those for the mission. It also conveniently does not discuss the mission mass fraction the consumables represent. I don't have a reference handy but I will provide the details later. Off course all of this has been mentioned to you before when you've posted that link, but I'm sure it will go in one ear and out the other again.
Regards,
Mark