Stallman wrote the license a lot of the code is covered by.
He doesn't hold it - the actually authors of the various bits have that.
One thing I will say for Stallman is that he does have strong principles and lives by them, and occasionally tries to make others live by them too.

Empeg did say that they had done a number of changes to the ARM code and posted
them back to the main kernel developers (If I remember correctly).

David