Gun Control & RKBA

... when the fundies say "God said it, I believe it, that settles it," are they stating a hypothesis? Do they "think it may be true"?

Again with absurdity, taking a particular alternate definition & applying it broadly.
I say 'You stink', doesn't mean I can actually smell you.

Daughter asks dad did you see my backpack? ... it's out in the car... thanks, as she walks out of the house ... mom comes in & asks have you seen our daughter? .. dad says I believe she went out to the car.
See how this simple vignette destroys any argument you try to make? he doesn't firmly believe whether she went to car, he just believes it so, thinks it so.

straw man; Again, ignore the syntactic matrix at your peril. You are making a fool of yourself. Believe it.

Macho machismo BS from the man of straw. The only fool here is you & your inane argument.
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Straw man's inane argument:

straw man: Hypotheses are developed from what individuals think may be true. If you think that that phrase is equivalent to believe to be true, then you have a problem with your vocabulary as well as your scientific method.
The first affirms acceptance of the hypothesis as fact. The second indicates that more investigation is necessary. They are clearly different.

Observe readers the dictionary definition of hypothesis; note how hypotheses have been formulated countless times in the past by researchers who either 'believe' it to be true, or simply 'think may be true'. :

oxford: A supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation
.. general: an idea that attempts to explain something but has not yet been tested or proved to be correct.
.. Merriam Webster: .. an idea or theory that is not proven but that leads to further study or discussion http://www.onelook.com/?w=hypothesis&ls=a

Whether a man actually believes his 'proposed explanation' is true, or thinks his idea 'may be true', does not refute that his idea is a hypothesis. You hair split the meaning of 'believe' & 'think may be'.

merr websters: Full Definition of HYPOTHESIS a : an assumption or concession made for the sake of argument
b : an interpretation of a practical situation or condition taken as the ground for action
2 a tentative assumption made in order to draw out and test its logical or empirical consequences

I made an assumption which I both believe & think may be true.
You strawman, split hairs with strained reasoning, and argue the absurd.