What sanctimonious humbug, Holmes.
If someone like Dawkins decides to engage in public debate about something he cares passionately about, then he's perfectly free to use whatever arguments he likes. If you don't like the arguments, then respond to
them - don't try to short-circuit the debate by questioning his right to engage in it.
Public debate isn't governed by the scientific method - there's no panel of academics to peer review the arguments. You have to make your case in as powerful a way as you can - once you get through to people, then they will judge the merits of your case based on their own experience. And that's about as close as public debate comes to resolving the truth of a matter.
'I can't even fit all my wife's clothes into a suitcase for travelling. So you want me to believe we're going to put all of the planets and stars and everything into a sandwich bag?' - q3psycho on the Big Bang