I think, we all agree that at the end of the day we want high-quality papers published and presentations given. Unfortunately, such publications cannot be simply ensured by blind trust in the statements of their authors. In order to ensure high-quality publications, they have to be reviewed by people with expertise and experience on the given subject, in other words they have to be reviewed by peers.
However, high-quality publications require high-quality reviews. Following the same logic, such reviews cannot be simply ensured by blind trust in the assessments of reviewers and/or editors.