Of course not. Google should not disclose all the does and don't, but they should at least reveal the absolute don'ts which can cause severe penalty or banning.
When a clean site gets hit with a penalty that sends it down from the first couple of results to nowhere to be found, Google should give some indication of what may cause that.
I know that Google has a webmasters guidelines page, but many of the sites that were hit do follow those guidelines.
Perhaps Google should update it's guidelines page.