I had no idea either and was quite surprised to see the attack on Mozilla from the author of "The Cathedral and the Bazaar". Decided to dig deeper and lost a significant chunk of my naivete concerning a certain type of open source advocates.
The cherry on top. As far as I understand these are true Eric Raymond's beliefs:
"It is relevant here that I am a third-degree Wiccan, which means that I’m pretty experienced at designing rituals that invoke god-forms for specified purposes."[0]
I hope fetchmail makes its choice too and dies. End of story.