Well the way I see it, for what it's worth, is that when we are discussing Christian matters, we are dealing with the ultimate truth of reality. I don't think I see it as "edgy", as much as I see it as sharp as a two edged sword that truth cuts strait to the bone and exposes our fallen nature, our true wickedness in the face of a Holy God, when dealing with God that’s all it can do. I am a man of unclean lips, unworthy, broken, foul, nothing in the presents of our Holy God. What Dr. Martin is saying here actually make sense if you think about it, sadly. The secular media has no ultimate standard they stand on. They judge everything by the flesh, by what they think, so are much more open to hearing these fantastic claims, if for no other reason than to mock them. The Christians on the other hand are far more invested in the beliefs they hold to, and in ways are far less likely to consider anything that may challenge certain beliefs. Please don’t misunderstand, all people are prone to letting their preconceptions steer how they view all evidence, and even tend to make it fit what they want it to, but I do think that that Christians (or the religious in general) can be more resistant to hearing anything that may challenge their deeply held beliefs. When you believe “whatever”, it’s much easier to see these things as entertaining.
To answer the question head on- Does Christian Discussion Bring an Edgy Element? Yes, it by the very nature of the subject has to.