Did FreeBSD lose 83% of core developers?

[Konrad Heuer]

Hello everyone,

bsdconferences at youtube (http://de.youtube.com/watch?v=g7tvI6JCXD0) 
presents a talk of Jason Dixon (BSD is Dying, Jason Dixon, NYCBSDCon 2007) 
mentioning what I ask within the subject:

Did FreeBSD lose 83% of core developers?

I never heard about that. What's the background of this message? Or is it 
just a joke?

Best regards

Konrad Heuer
GWDG, Am Fassberg, 37077 Goettingen, Germany, kheuer2 at gwdg.de