Then please cite a source that backs that up. Bothering to follow the links from the Mozilla post indicates you are dead wrong:
We plan to open-source our H.264 codec, and to provide
it as a binary module that can be downloaded for free
from the Internet. -- [1]
[...] The source code will be open source and distributed
with a BSD lIcense. The binary module is separate and
when the users software downloads it from Cisco, that
is when we are responsible for paying the MPEG LA
royalties. – Nadee Gunasena, Cisco PR [2]
[1] Cisco blog: http://blogs.cisco.com/collaboration/open-source-h-264-remov...[2] Comment on same: http://blogs.cisco.com/collaboration/open-source-h-264-remov...