The error message David quotes is defined in step 4 of <https://wiki.ubuntu.com/SoftwareCenter#removing>. However, "The Ubuntu desktop system" is the title of ubuntu-desktop, and that is supposed to be special-cased with its own error message in step 3. So, that much is a bug in USC.
Removing ubuntu-desktop has no immediate effect, because it's just a metapackage. If there is an identifiable set of packages where removing any one of them prevents Ubuntu from starting up, there should be a separate bug report for USC to warn more strongly in that case.
The error message David quotes is defined in step 4 of <https:/ /wiki.ubuntu. com/SoftwareCen ter#removing>. However, "The Ubuntu desktop system" is the title of ubuntu-desktop, and that is supposed to be special-cased with its own error message in step 3. So, that much is a bug in USC.
Removing ubuntu-desktop has no immediate effect, because it's just a metapackage. If there is an identifiable set of packages where removing any one of them prevents Ubuntu from starting up, there should be a separate bug report for USC to warn more strongly in that case.