There's definitely a large set of sites that should not have a viable choice, not from Google and not from anyone else, as we-the-users want our distribution ch

There's definitely a large set of sites that should not have a viable choice, not from Google and not from anyone else, as we-the-users want our distribution channels to filter out various groups of SEO spam. The only question is whether this site is one of these or not - and even if it's not, a certain number of 'false positives' is acceptable and less strict filters definitely are not. If you're running a site that's skirting the line between spam and not-spam, then either you take on the risk that you might be dropped by google and others, or (perhaps preferably) stop doing that thing and do something substantially different.