They never discuss spiritual matters because they are not allowed their own views on matters. Everything is already laid out for us in WT literature. The GB do all the thinking for us.
A perfect example is when I was on holiday with some witnesses/aquaintances. I tried to initiate a conversation on a particular scripture and get their thoughts. I had one response saying the organisations view is blah blah blah. Then the subject completely changed to something else other than religion.
Jdubs are robots. They drink the koolaid and go along with things. They are not stimulated to have a view point on scriptures.