While peer review has its problems, it's hardly the biggest problem and there are systemic issues that peer reviewers can't see. E.g. one of the biggest issues

While peer review has its problems, it's hardly the biggest problem and there are systemic issues that peer reviewers can't see. E.g. one of the biggest issues in science is publication bias and the lack of publishing "negative" findings. You don't see as a reviewer if the person submitting the study has three other studies laying on his desk that he'll never publish.