It isn't really just negligence, it is just a major lack of resources now that ppc is a community-supported port for Canonical, rather than an officially supported commercial architecture like x86 etc. It is no surprise that the commercial architectures take precedence, and major things like this slip.

All we can do is try and notify devs early, and post work-around patches. Eventually, if things get really rough, like they are doing with Xubuntu, one can try taking all their learned knowledge to perhaps Debian XFCE.

Don't worry about not participating. You are doing that now even if the only accomplishment is that you've helped just ONE person out there.