...but I think otherwise its very hard to publicly attack an idea from the stage (in this case UFOs) without seeming condescending.
Condescension is fully justified when discussing UFOs.
I think its a population thing. If a country has a certain population of people working as scientists, there's bound to be some that are inclined towards public debate. The US has a huge population advantage over any European country to make that happen, and it also happens to have an extrovert bias in its culture. Add to that that Dr. Tyson hosts a show on PBS and he's clearly thus inclined.
I was rather mentioning that religious
TV-Evangelism is a phenomenon peculiar to the USA. Aggressive piety is rather frowned upon in Europe, not necessarily due to politically correct anti-christianism --- plus the fact that some of the evangelists spoil their finish by occasionally appealing for donations to continue their holy work has a sceptical effect upon our jaded sensibilities. There are plenty of scientists chatting away, usually at four in the morning, on TV ( I should assume, since I haven't a television: if I wanted to see something it's available on internet ).
It just seems that as in the example shown, scientists are in America are turning into persuader-entertainers rather than, as here, dull earnest savants, dressed in the height of 1970s polyester, monotonously conversing in a script laced with forced friendliness towards each other and the audience. Lotsa christian names are used:
"Yes, Jim, when the co-efficient reaches maximum capacity, the lever is forced and the gases implode into the upper chamber; so impelling the hour hand one notch forward."
Woodenly: "Really, Brian ? That's fascinating."
"Yes it is. Jim. Now, turning our attention to the flex-inhibItor, we see..." and so on.
Oh, and Richard Dawkins is British, in case you wanted an example of a non-American Science Evangelist.
I should rather classify him as an Atheist Religious TV-Evangelist, making a handsome living by apologetics. I place him exactly with David Icke. They both have forums dedicated to them and their preachings*.
Claverhouse
* As does, oddly, Billy Bragg.