In some ways, I might allow that Google's ahead of society and chomping at the bit to get everyone else there. The Google+ product insofar as authorship tracking is concerned was a shot at introducing accountability - something that's sorely lacking in the wild west we-don'-use-names-here-pardner environment of the Web - and that will be resisted tenfold as a climax to current events.
I think Google likes UGC, because users like it and it fills content gaps, but it's terribly noisy and Google's not advanced enough itself, AI-wise, to evaluate the sincerity of the content (and no, Google hasn't quite got what authority means - I wouldn't give my neighbor (or the author of a piece of UGC) my credit card, but I'd ask him how to treat my aching tooth, which is more than I can say for a branded retailer). They don't want to erase the content, because it needs to flourish simply as a mode of Internet expansion. So to help Google along while they get smarter, they want more rigid control of the content along a fairly tunnel-vision path - grasping onto authorship. Their impatience is counterproductive, though; the users that generate that content are not yet in a position to compete with the big boys on Google's terms, and the actual UGC websites remain in a wary relationship with the very force that should be guiding them - Google. Since entrepreneurship is back after a long, dry century, those efforts that are doused by Google's flood on the outlaws' fire will go elsewhere, but it'll hurt in the meantime. It's all a bit depressing.
But anyway, back to the question of how to get Google to hear webmasters' points...I'm not optimistic, but here goes, more from a "mom" perspective than a techie one (as you'd be hard-pressed to find someone more non-techie than me):
1) Compete. Someone put together a better search engine. Heck, an index that can be searched in a totally customizable way. Please. Just for me- I mean, for the world's sake. Google'd listen then.
2) Stop talking to Google in the "You greedy corporation, you" and "You turned on us, man" and "You're a buncha bloomin' idiots" way. It's hard for someone - even a corporation - to admit they have a problem if everyone's shouting names in the schoolyard. Much easier to offer defensive platitudes, which is what we get when we do that. When talking to Google (whether the faceless entity or its representatives), acknowledge their challenges and help them figure out how to fix 'em. Develop a trust relationship.
3) Be blunt. Be concise. Be impersonal.
4) Fix their issue of scalabity. That's their biggest challenge. Their biggest reason for the "it's unfair!" problem we all have. If you can figure out how they can fix that problem, they'll listen!