Notice that you say that you would as a general rule distrust an atheist more than someone who is religious. You know why that is bigoted? A person being an atheist doesn't actually tell you enough about their trustworthiness to prejudge them in this way. It's unreasonably negatively prejudging a person based on their belonging to a class of people. Since there isn't even reason to think atheists as a group have a correlation with being more untrustworthy, this is in some ways worse than being worried that a black person will commit a crime because they are black.
Your argument here that this shouldn't be considered bigoted is ridiculous. The fact that an atheist can effectively conceal his identity from you and therefore shield themselves from your prejudices doesn't mean you aren't a bigot. The fact that you actually blame the atheist for your own bigoted reactions towards them because they outed themselves is appalling.
I don't intend to speak for Hoops, but this is how I interpret his comments regarding the trustworthiness of atheists. If Hoops' worldview relies on a deity as moral compass, he naturally would be skeptical of those who lack belief in that same deity.
How is that bigoted?