simply make an alt for first time completion, get a friend, run the dungeons and award all the extra myth to him
Player, not character. I guess if someone really has the energy and money to buy new FF14 copies and/or hack other people's accounts, there is nothing in the world that could stop him.

As for the current situation, do you think SE really anticipated this? Should they really think "Well, let Darwin sort it out" then yes, they are beyond help and I am in the wrong place.