I think this issue is best dealt with on the side - it has no bearing
on any of the really contentious points here.
I note that the owners of the copyright on udev have announced to the
world that (emphasis mine):
You may modify your copy or copies of the Library or ANY PORTION OF
IT, thus forming a work based on the Library, and copy and distribute
such modifications or work under the terms of Section 1 above,
provided that you also meet all of these conditions...
None of those conditions included keeping the copyright line intact.