They're allowed to have an opinion, too, and they are scientists, after all, which means we might actually want at least to consider what they have to say. We're free to disagree with them, but we really should have some good reasons for that.
Those who aspire to become nuclear physics do not study a "nuclear scientific method"; they learn how to apply the scientific method to the field of nuclear physics. Folks who want to become climate scientists do not study a "climate-scientific method"; they learn how to apply the scientific method to the field of climate science.
Do you see where I'm going with this? Would I pay attention to a similar group of medical doctors, or chemists? Sure, why not?