I'm one of them.
I deconverted based on the action of some believers.
Let me explain. I'm a geologist with all the necessary papers. (I had to try the YEC argument from authority, for it does work on some people
). In any case, the lies and deception so characteristic of YEC's played a very large role in my deconversion. Lies and deception are the only "tools" they have, because everything they said about geology, was a lie. And when I say everything, I mean
everything. They sugar coated their lies for non-geologists in such a way that non-geologists wouldn't know that they were lying.
For example, they got some "geologist" to do "radiometric" dating on the rocks which formed with the Mount Saint Helens eruption. They got weird, old dates. Now they tell everyone that all radiometric dates are wrong.
What they didn't tell their sheep was that the method they used (in this case K/Ar dating), is not suitable to date any young rock at all. The K/Ar method can't work on young rocks. There's a miriad of very good reasons for this.
YEC's know their methods are inaccurate, but they still sell it as "science" and tell everyone that all "radiometric dates" are wrong. Just lies and deceit. That's all they have.
Now I'm a very proud atheist (some Christians call me a radical atheist, which of course is another lie
).