It seems that the WT is distancing itself from what was once one of their favorite texts, ``Make sure of all things;" they even published a handbook with that as its title. It now appears, however to have fallen into neglect/disuse as its message would appear to be an invitation to the Internet and other sources of independent information.
I haven't done a word search on recent publications, but I would bet that this text is invoked a lot less frequently than in the past.