Peer review does not necessarily make a paper trustworthy nor does the absence mean there's necessarily a lack of trustworthiness. It just means it has the app

Peer review does not necessarily make a paper trustworthy nor does the absence mean there's necessarily a lack of trustworthiness. It just means it has the approval of some reviewers, who can be of varying quality and may not have even fully understood what they were reviewing. Plenty of schlock has passed peer review.