I know of some cases were reviewers rejected papers that were subsequently published, and so, sometimes, garbage gets published.
Two reviewers rejected the paper, and there was some problems with the work, not to mention that the paper failed to address something that in the paper was claimed would be addressed. One of the authors was a former student of the editor of the prestigious international journal. But I digress.Just because a reviewer rejects a paper, that doesn't mean it shouldn't get published. It's a big red flag though.