All identifiers have scope; if the license doesn't specify, there's no
reason to think you can't use an identifier whose scope is limited to
your
involvement in the project. :)
It's a reasonable interpretation. The problem is that there are
_other_ reasonable interpretations as well; in particular one easily
imagines a court that would find that the "limited-scope identifier"
defense is a nonsense word-game and finds for the plaintiff (the
author who had sued a pseudonymous modificator for infringement).