Except that the method is applied in directly the opposite fashion. I have proven to my satisfaction that the Bible is TRUE. And in proving that, the Bible can be applied as a sure standard... a measuring rod as it were. Things that don't measure up can be discarded...
Atheists do not have such a standard to measure by, and therein lies their fault. Furthermore, many of the points they settle upon go away if one looks to Yeshua rather than the Greek/Roman Christ. It is a subtle difference, but a more Hebrew mindset opens one's eyes.
For instance, YHWH's insistence that He be worshiped in a particular fashion... *not* to introduce heathen customs as forms of worship to Him. Did YHWH change His mind? Heaven forbid! But here we are today with a worship system that in no way resembles what HE defined. It is an astonishment to understand that every pagan holy day is revered in Christianity, but not ONE of YHWH's Holy Days is observed... Not a single one. Doesn't that bother you?
Your method is applied in exactly the same fashion as atheist. You just want to pick and choose where to apply it.