Yes I can remember informal discussions in JW homes, pulling out the Kingdom Interlinear, different Bible versions, old Watchtower volumes. I don't think you get many discussions like that any more. The culture has changed. People just don't take it as seriously any more.
You do still get some who obsessively keep on top of all the changes in teaching. The Watchtower helpfully published a list of changes a few years ago. You can use the library and App for so-called research. Or search a video even. (The introductions to Bible books video series is so incredibly dumb it is mind boggling)
Plus to answer the question how do we know which anti-types still stand: I think the Watchtower stated that only aunti-types specifically stated in the Bible are now accepted. That would be like Sarah and Hagar, and Melchizedek and a few others. No Jonasdabs, or John class, or Elijah/Elisha and so on, as far as I know.
It is depressing, but I think JWs are part of a broader trend. Society in general is just a lot less interested in the Bible than it used to be. Even among people who attend church there is not the level of interest there once was. JWs are not immune from this.