Everyone's concept of privacy differs, and it would be impossible to strip out sufficient information from the bug report to everyone's liking and still make it useful to NVIDIA staff.
I'll note that I've had sporadic reports from people who felt that providing an nvidia-bug-report.log at all is a violation of their privacy.
The best solution here is to manually edit a bug report if you feel that its including information that you'd rather not have exposed (or email firstname.lastname@example.org
if you'd prefer not to post it publicly on the forum). Per Aaron's recommendation, please note if you've manually edited the bug report so that everyone will be aware of the potential for missing information.