Actual scientists are not those caricatures in many of these press releases. It is interesting sometimes to find that a particular scientist will express more and more certainty that farther he is from his own field of expertise and I have known a couple like that. Indeed, many scientists view those scientists who insist that they are correct as crackpots and that includes the former Richard Feynman and Carl Sagan.
And I would add, those who are speaking to an audience not familiar with the evidence. I think this is just human nature. The desire to summarize for those not familiar with the facts.
Again, I'm not a Luddite. I just like to see a healthy dose of humility in scientists that are working with conjecture, albeit logical conjecture. e.g. Black matter only "exists" because the math doesn't work without it (add humility here to the possibility of being wrong). The moon can be observed (less humility required).