Got this far and stopped reading:

To quote Graham, mafioso of the startup incubators:

I have lots of valid reasons to be really grumpy about lots of things. I am also not a fan per se of PG. But any supposed debate that starts by basically smearing the character of the person you are debating is unlikely to be based on sound, objective reasoning. This piece is almost certainly not motivated by a desire to correct any logic missteps in pg's writing. It is most likely a thinly veiled excuse for trying to trash the man personally.