Many high-profile scientists are that way, yes (after all, I have yet to see a book called A Guide to some Neat Stuff that isn’t Really All That Important in the Grand Scheme of Things, though I’m still looking), but I don’t think this applies to all or even most of them (us?). I got my undergrad in math and physics and most of the professors in those subjects that I’ve met were really nice people, and the same for those I’m working with now as I get my PhD in Math.
We do have a hard time not coming across as arrogant to non-science people a times though, for 4 reason:
- There are questions which are commonly argued that we know the actual answer to, and occasionally get impatient explaining. The airplane will take off the treadmill, and .999… does in fact equal 1. It doesn’t help that because we know the answer we often dismiss an argument for the wrong answer immediately.
- It is extremely hard to say things like the last reason without coming across as arrogant, even if they’re true.
- We get “you must be so smart” a lot. We don’t know how to respond to that.
- We occasionally are surprised that people in other fields aren’t familiar with the stuff it took us a couple years to learn, simply because it’s become background to our thoughts. This occasionally comes across as “what do you mean you don’t know that?” followed by realization and then the statement “oh, right, there’s no reason you should know that.” But that statement, though usually meant well (and true, there is no reason that most people should know that the spin of an electron can be thought of as a vector in a 2-d Hilbert space), doesn’t in fact make things better.
So if us science people come across as arrogant, it’s often by accident. Though I’m not sure about Dawkins, I’m not sure how anyone could be that arrogant without trying.
I do have to say, though, that a couple of the people I respect the most (leaders of a scout troop I was in, in fact) were researches at government facility near where I grew up. They were both elderly gentlemen, of that quiet Southern Protestant type that reminds you of the American Gothic picture (one of them spoke at a rate of 3 words per minute and everything.). Some of the most principled people I knew, and certainly devoted to God. Also extremely skilled with chain saws. I learned a lot from them about stuff not related to science at all (unless using a chain saw is a science, but I’ve always considered it more an art), and only even found out they were researchers after they heard I was going into science myself.