> I think those laws would help tremendously, but mostly by forcing everyone to be overly cautious not to break them, creating strong chilling effects. They'd stifle freedom, and so does Google's secret law system.

No need to have new secret laws - there are already enough obscure laws that I guarantee you have broken many of them whose statute hasn't expired. That is why you shouldn't speak to cops without a lawyer.

That said - it's not a Google problem as it's the norm. Most services, banks or even potential employers will tell you the reason for declining service - not because they want a chilling effect, but because there are so many ways it can get wrong (for them).