Excellent observation. It's been my experience that truthers are looking for converts rather than having a debate in an environment where they know they're going to loose. IMO it takes a really really stubborn truther to come in here and have a go.
Over on another forum, I had five of them on the go. One who just cant accept the fact that the WTC collapses are a mass vs structure problem and refuses to look it as anything other than a density issue including stating that the collapses violate the laws of physics,
Another one is politically motivated and throwing out everything in the truther handbook. I have my doubts whether he actually believes what he's posting but IMO he's got too much of an emotional investment in being a troofer to back down and do some proper research. interestingly, with this guy, I conceded LiHOP because it's not something I can refute and said truther jumped on that to "declare victory" and in the same post, mentioned MiHOP and LiHOP were the same thing.
Oi.
Teh stoopid.......