You both need to take this stuff to hn@ycombinator.com instead of hashing it out here. I think you're wrong, but either way: stop crudding up the threads when all you've got to say is "this person submitted their own post". People do that all the time.

Again: if you think they've crossed the line, the guidelines specifically ask you not take to the threads with it. Mail Dan and Tom. They'll get back to you quickly.