Caplan is very right wing ("the homeless still smile!"). The talk was still okish, but the points of view come from one side and could use some balance.
Blaming poverty on "impulsive sex" and leaving blameless the policies of limiting birth control and freedom of choice is a pretty myopic point of view.
A fair amount of libertarians are right wing. This is true even if one supports something or another that happens to not be stereotypically right wing.