Interesting analysis, but the overall gist still seems to be "Don't know. Best sit tight".
Must admit that, like the author, I was coming to the conclusion that the current results just cannot be what they intended and they would at some point be "fixed". As time passes, that conclusion is changing into little more than a vague hope!
I still think that there are more changes to come though. Some of the results I have seen are just so loaded with spam that it seems that some of the basic filters are not in place at the moment. I suspect that the new algo (whatever it may be) is here to stay, but we will see a lot of the current top results drop when filters come back online. Sadly, this is all based on 90% hunch 10% hope & 0% science.
Anyone who enjoyed this may like the piece on
www.seo-tests.com as well.