I’m going to say that he was indeed getting off on hearing these stories about sex abuse and was probably a bit sore he did not get to hear such tales as an elder.
That was my feeling also when this went down. Aside from the "ick/creep" factor of sharing such intimate information with an admitted sex addict, it is completely inappropriate and irresponsible for him to be any part of the CSA community, or participate in any abuse victims matters.