The whole point is that they're telling you stuff you disagree with or don't like to hear, but we shouldn't censor them, not that they're wearing a lab coat.
Setting aside your political beliefs, looking at the data, and coming to a conclusion based on evidence is science. There is no need for dissenters or a devil's advocate. The grandparent is correct. We need scientists.
This is what I think of when I hear the word science:
The whole point is that they're telling you stuff you disagree with or don't like to hear, but we shouldn't censor them, not that they're wearing a lab coat.