Fair point. I can only answer for myself, but for me it's more of the idea of a language being implemented in Python rather than an issue with having Python installed. I'll admit that I'm a bit of a PL snob, but writing a language in Python just feels inefficient.
Another thing to note is that the vast majority of the packages you list are things that might not be installed on a server environment; I admit I haven't thoroughly read through every single package you listed, but the vast majority of them seem to be GUI-related (Gnome, Unity, etc.) or printing related, none of which would be necessary on a server environment. The only ones that stick out as not fitting into these categories are the Ubuntu-specific things like apparmor and the various apt-related packages (which would presumably not be present on a machine that isn't Ubuntu or some other Debian-based system), clang-format (which wouldn't really necessary on a server, since ideally you'd format your code before pushing), and lsb-release (which may or may not be necessary; on the machine where I'm currently writing this, the only package I have that depends on lsb-release is mongodb, so for servers not having a database (or having a different database), this wouldn't be necessary either.
Another thing to note is that the vast majority of the packages you list are things that might not be installed on a server environment; I admit I haven't thoroughly read through every single package you listed, but the vast majority of them seem to be GUI-related (Gnome, Unity, etc.) or printing related, none of which would be necessary on a server environment. The only ones that stick out as not fitting into these categories are the Ubuntu-specific things like apparmor and the various apt-related packages (which would presumably not be present on a machine that isn't Ubuntu or some other Debian-based system), clang-format (which wouldn't really necessary on a server, since ideally you'd format your code before pushing), and lsb-release (which may or may not be necessary; on the machine where I'm currently writing this, the only package I have that depends on lsb-release is mongodb, so for servers not having a database (or having a different database), this wouldn't be necessary either.