I mean, Graeber is right in that he was being trolled. But Graeber lies when he says he tried to ignore DeLong and Graeber lies when he characterizes DeLong as obsessively harping on one inaccuracy.
Graeber's fit of apoplexy wasn't just in that one HN comment. His "ignoring" DeLong was an uninterrupted train of obsessive, one-sided, and often bizarrely misdirected anger and insult. The only "ignoring" was that Graeber, in all his raging against DeLong's trollbot, did not bother do any raging in the form of citing facts or other defense. As DeLong puts it:
> Graeber, of course, makes no attempt to defend his claims in his chapter 12. He doesn't because he can't. Chapter 12 is in fact riddled with errors.... It really appears to be just too easy for people like David Graeber to imagine that they are in a two-month extended conversation where there is a human mind on the other side, when actually they are just the bird pecking itself in the window glass[1].
That incident was a piece in a longer flamewar in which Graeber, essentially, behaves in the obsessive and intellectually bankrupt manner he accused DeLong of behaving.
[1]https://delong.typepad.com/sdj/2013/04/david-graeber-april-f...