There's a difference between results that come from people who we think to be generally bad but do not have any incentive to do anything but a reasonable study,

There's a difference between results that come from people who we think to be generally bad but do not have any incentive to do anything but a reasonable study, versus people we suspect desire to directly tamper with the research. I wouldn't ignore any results that have strong evidence, but I would read much more carefully the papers of those who start with an agenda.