The primary material on Lesswrong is a mixed bag, but certainly some of it is very interesting even to people with training in Philosophy.

Indeed you can thank Dennett's 'Intuition Pumps' for providing a source of legitimacy to those people who want to take the mental model stuff Very Seriously.

The same stuff can be mis-leading or well-leading. People will be people. Give it a few years and I half-expect a Mental-Models-cum-pseudo-Magickal Qabbalistic cottage industry to appear. Or at least a handy reference system, such as [Yudkowsky 24:10]...