The complaints about the announcement are factual and not really the problem. The problem is saying things like:
"Architecture astronauts take over"
"going to be great since they use dbus and gobject"
"the needs of architecture takes over the needs of users"
It might not be all that easy to understand what printerd is for from the announcement, but that doesn't mean you should jump to the wrong conclusions and flame the people doing the work about those.
Tim has been working on Linux printing for the last decade. To claim that he has no knowledge about the needs of users, or that he just does this so he can use dbus or gobject is ridiculous. He is one of the few people who actually work to make printing work in Linux, and what does he get for it? Flames by people who do not even understand the problem (although the lack of understanding is partly the fault of the announcement).