> The key point here is I don't think Google should block any website without providing some warning an an opportunity to fix the issue before imposing an immediate punishment.
This isn't punishment, it's end-user protection of the same type as other anti-malware tools. And the protection fundamentally cannot work if operated in the way you suggest.
To use your criminal justice analogue you've not only confessed to the crime, but confessed to continuing the crime while seeking pre-trial release, after an evolving series of denials.