Peer Review is not set up to detect fraudulent research and attempts to do so are fraught with risk, since established researchers often have a hard time believing in results from new paradigms. What the heck is an author supposed to do if a reviewer says "I think these numbers are made up"?

The purpose of peer review is to decide whether a paper is useful to the community, whether the presentation is good enough that the community can precisely understand what happened, and whether it has methodological issues that the authors may have missed. But we always approach reviews with a charitable lens, even when reviewing for extremely low-acceptance outlets.

The process that detects the bad research comes afterwards, as it should.