I'd consider that an exceptional case of one site that was provably harmful. With scam sites it is easy to find thousands that match a pattern that identifies them as scams but that's still circumstantial evidence. We actually don't want internet police that shuts down sites based on indirect evidence of falsity as there would be numerous false positives, with legitimate sites shut down. The web (both the true www as well as walled gardens) will always be populated by scams and bad actors, just like real life is. We can hope that education & control mechanisms help as much as possible but they are fallible and require time, effort & money.