I've wondered about this, because back in the day we knew a lot of brothers and sisters who took great joy showing how much research they did. One sister in particular had notebooks that she had created herself about prophecy, all indexed and cross-referenced. Impressive (if not overwhelming) to studies. All of it for nothing, after the bOrg decided they weren't in to types/anti-types anymore.
I know she's still in, so I wonder how she feels about the changes. I don't have much meaningful contact now but it doesn't seem like anyone takes doctrine seriously. The younger generation doesn't have a doctrinal mindset at all. Let's face it, you don't have to know much (such as it is) to stand by a cart or show someone a video on a tablet.
I don't think anyone reads or thinks about anything before the 90s, as they have been conditioned not to. But - I'm intrigued to think that there are "underground" groups of people trying to discuss research. I wonder what they really think.
Has the bOrg just thrown out the "Revelation" books and given up on interpretation of what used to be considered the most important prophecies in the Bible?