Interesting, because this is exactly what we do to theists when we insist on evidence. They have made the claim now what are the facts, what evidence do they have. I do the same thing to Atheists when they come blowing in here calling Christians stupid or when the blindly assert 'There is no God."
I demand to know which god they are talking about and how in the hell would they know it? God is an unfalsifiable claim. You can not prove it false. I personally believe I can demonstrate the likelyhood of every god I have yet encountered to be false. But that is a personal belief and not a fact. “Pinning down means looking at what is real. Facing the facts.” It is exactly what we do when theists enter the site. We hold them accountable for their comments. We point to the fallacious logic. And we certainly don’t offer much sympathy, unless, they are being honest and genuine in their interactions. Most are not, but we have had a few.
Is it playing god to point out what is real, objective and verifiable? Is it playing god to stop the games and hold people accountable for the things they say and do? I don’t think so. There may be times when it is more or less appropriate but I don’t regard it as God like to pin anyone down to reality.