The GPL says that the software is "as is", no warranty of any kind. Similarly, I could scream to have the developers to perform some testing and provide a bit of warranty.
With Ubuntu and any other software, you get the source and it is up to you to deal with the replacement of any trademark strings. What packages are included in Ubuntu, changes all the time and the code changes as well. How can a policy document be explicit when there is no infrastructure yet in place to deal with those code changes?
CentOS was in this same position and they did the work without bitching to Redhat.
With Ubuntu and any other software, you get the source and it is up to you to deal with the replacement of any trademark strings. What packages are included in Ubuntu, changes all the time and the code changes as well. How can a policy document be explicit when there is no infrastructure yet in place to deal with those code changes? CentOS was in this same position and they did the work without bitching to Redhat.