Yeah and if this were taken seriously, you would have Mechanical Turk style services where poors are paid pennies to hand-write submitted/generated slop, defeating the purpose.

They covered that situation with the pen plotter. There are signals of commitment that you can't fake. The article isn't saying anything about accuracy or authorship, only that you actually cared about what you were communicating enough to put in some self sacrifice, and that this is a useful signal to help decide if something is worth listening to.