Specifically philosophy professors, but the argument is more general. In the NYT here:
… Whether you call it a “petition,” an “open letter” or a “public statement,” this type of document is distinguished by the fact that after stating and arguing for a position, it lists the names of people who endorse the position. The petition aims to effect persuasion with respect to what appears in the first part not only by way of any argument contained therein but also by way of the number and respectability of the people who figure in the second part. Such a document tries to persuade you to believe (that it is right to do) something because many people, some of whom are authorities, believe it (is the right thing to do). It is not always wrong to believe things because many people believe them, but it is always intellectually uninquisitive to do so.
The problem here is not that what many believe can be false, though that is a problem. The problem is that even if it’s true, the fact that many believe it doesn’t shed any light on it why it’s true — and that is what the intellectually inquisitive person wants to know. Is this problem mitigated by the fact that the list is not about sheer numbers because authorities appear on it? I think intellectually inquisitive people do gravitate toward those with expertise, because they are in an especially good position to answer our questions. But this goes only for experts taken severally. One expert is a learning opportunity; being confronted with an arsenal of experts is about as conducive to conversation as a firing squad. …
Agnes Callard is an associate professor of philosophy at the University of Chicago and the author of “Aspiration: The Agency of Becoming.”