Bugbear - I am not sure that is the case - some worldly people who fall for Witnesses study and maybe even get baptized but quickly see through the BS. I think it is worse for those who get baptized and then realise the folly of their ways as they have created expectations in the Witness spouse and so the fact that they end up as an Apostate becomes a big source of resentment. It is easier to be a UBM.
The more educated the quicker one sees through the BS even when blinded by love of the Witness. In my case I never contemplated becoming a Witness or even studying. I told my wife very early that if I did a study that I would be labelled as an Opposer within five minutes for the questions I would ask they could not answer. She already understood this from the questions I had asked her so never pursued the subject.