Earlier quoted context omitted.
Why does PulseAudio have anything to do with Ubuntu? AFAIK, there is no relation between the two, other than the fact that Ubuntu offers PulseAudio (along with almost every other distro).
I must admit that, more than once, an Ubuntu upgrade killed my audio and I had to go and fix it myself. It's really painful that a distro that wants to be number 1 is so broken at times.
The vast majority of the packages in Ubuntu (more notably in the LTS releases) are all custom patched by Ubu-devs. Rather than taking the raw package and pushing it through, they have a semi-opaque method of testing, patching, and then releasing to the greater community.
I've tried several times to get an 'in' so that I could help with the process, but it seems to me like a 'club hangout' where outsiders are slightly discouraged. :(