I followed Release Managers request on how to deal with the libvorbis mess, if you have a problem with how it was dealt with bring it up on irc. You should know this already but a message was sent out a week in advance to the libvorbis breakage occuring so that maintainers would about it. And no the general consensus is not for a library to conflict with every package that built against an older version (I don't recall if you suggested that or if it was someone else).
Thanks, Chris