Ubuntu kernel...bloated with closed-source thingies ?

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http://forums.fedoraforum.org – While zapping through Planet Fedora I stumbled upon this blog post: http://0pointer.de/blog/projects/pa-in-ubuntu.html which is a rant on Pulseaudio mostly, but it has some strange allusions on the Ubuntu kernel. Can anyone confirm, deny or detail this issue with valid arguments ? Thanks. :) (HowTos)