The statement “dogma does not belong in science” is not a statement about the natural world, hence it is not a “scientific” statement. It is a philosophical statement *about* science and the “scientific method.”
On the other hand, the statement, “life arose by purely naturalistic mechanisms with no intelligent design whatsoever,” *is* a statement about the natural world. So is the statement, “Intelligent Design cannot be found in nature.” Those are *scientific* statements, and they are perfectly legitimate *hypotheses*, but they are often asserted as *premises* for science right here in FR.
As I said, many hard-core evolutionists (i.e., pure naturalists) do not understand the difference between a hypothesis and a premise. Worse yet, many of them do not understand the difference between a premise and a conclusion. Hence their rejection of ID is both their premise *and* their conclusion — like the verdict in a kangaroo court.
They are 'fantastic postulates' as an attempt to explain the existence of life after assuming the philosophical axiom of naturalism.
'Science' is nothing more than the philosophical presumption of naturalism. Operating from an 'a priori' assumption of naturalism means that you are prevented from presenting anything other than a 'natural' solution. Not good if the universe and life were not 'naturally-derived'. You'll never recognize it.