Of all of the various kinds of internet atheist (see Taxonomy of Atheists), my least favorite are the cult atheists who pretend to be polite and open minded. They’re very recognizable because they always introduce themselves with something like, “I haven’t seen any evidence for God, but if I did I would become a theist. Do you know of any evidence for God?” They’ll tend to start out polite, often saying things like, “perhaps I’m mistaken, can you show me where?” It sounds great.
Then when you give them what they’ve asked for, such as presenting them or directing them to one of the arguments which shows that literally all being is evidence for God (e.g. the argument from motion, or the argument from contingency and necessity), their true colors come out. They’re still gentle of speech, but they say things like, “this is an argument from ignorance,” (they love to pretend that logic is an argument from ignorance) or accuse it of some other error which it obviously doesn’t have. They’ll typically throw in some insults, at this point, though gently phrased insults. “I think you might be engaging in wishful thinking” is no less an insult for being said in tea-time language.
As you proceed, the veneer of politeness tends to drop, with accusations becoming much more direct, and everything you’ve explained to them—at their request—rejected out of hand. The more you talk to them, the clearer it becomes that they don’t believe any of their principles, and when you have finally cornered them on something, they just ignore it and tend to claim that they’ve shown something that they didn’t, a few steps back in the conversation. Sometimes they declare victory and accuse you of just not being willing to admit it, sometimes they just claim to have shown you’re irrational or whatnot. They’re an enormous waste of time, and I think that’s their goal.
I’ve dealt with more than a few of them, over the years, and I’ve learned that they all have a tell—their act like they’re new to the subject. They pretend to be fair-minded, but also completely ignorant of the subject. If pressed, they will admit that they’ve heard things about it before, but this gives the lie to their presentation of fair-mindedness. A reasonable person, on asking for evidence of something, will save the other person time by explaining what they’ve already encountered and what their problems with it are. They don’t do this because wasting someone else’s time is their goal.
The other part of this tell is that they are pretending to be the new to the subject. The only people who are completely new to the subject of whether God exists are young children and (possibly) people raised by wolves who have barely learned English. Well, that’s not quite true, since I left off the qualifier of “reasonable.” Reasonable people investigate important questions, they don’t merely ignore them until someone decides to spoon-feed them information about them. If for some strange reason a reasonable person has come across no convincing source of information on the subject of God in real life, he would not merely go onto social media and ask complete strangers for evidence that God exists. A reasonable person (in this odd circumstance) would do some online searching and find sources that seem to be high quality. Or he might even read a book or two on the subject. (And then, as I noted above, if he’s asking randos on social media, he’ll give them some idea of where he’s starting from and what he already knows.)