Hi crobb, yes quite a lot has been revised to try and get free of the scrapers. It's bloody ridiculous for scrapers to outrank me for my original content that I am only changing as it was copied from me in the first place!
Yes it is a very unfortunate effect of Penguin, and it is hurting brands. I revised some of my content a few months ago, and was happy to see it rank #1 for a while (in quotes). It is now suppressed. It has been scraped dozens of times. At the very least, in light of other penalties, Google should allow the company name and snippets to appear where they should -- #1. They can suppress search rankings, but exact match snippets shouldn't. It's deliberate brand/authorship damage.