Perhaps obsession, but not OCD.
The generic theme is, line up your stones, present your circuitous cliche, wait for the target to turn up, hone in on only their responses for several posts, then throw some stones, retreat in self pity and to await support/backup etc, throw some more stones and say 'look how clever I am' and await the fawning of your supporters before concluding in your own self righteous cleverlyness that you were right all along. Then repeat.
So yes, if you assume both ends of the theist and antitheist spectrum, its pretty much the same as those lefty liberal yoghurt knitters versus the right wing neo nazi fascist debates that you get in AB News. Irrational versus rational etc etc.