Totally agree. A simple "X didn't happen before so it won't happen now" is missing the fact that the environment has massively changed with respect to usage and influence of Twitter and Google. As I said though, this change has been in _favor_ of Twitter if anything (which stands to reason, since Google was already a leviathan by then and Twitter was still quite young). So if anything one would expect the push to sacrifice Twitter's quality for SEO on Google to be less.