I don't know about the rest of us but this stuff comes off to me as a bit bizarre. This is such a departure from what I grew up with that it's unrecognizable. The fact is, they should indeed change the name because it's completely different. When I went door-to-door (and mind you I Pioneered myself - big deal), I pretty much stuck to "arguing" directly from the bible. I would offer mags or books (depending on what we were campaigning) but I wouldn't use them as reference for discussion. I used the bible. Fred Franz' doctrines could be convincingly argued to even the most competent amateurs, if you could lead them down the right path of illogical/logic.
I can recall my late grandfather, he was a former "Bethelite" that "partook" until the early fifties when he "decided" he wasn't of the heavenly calling, studying for hours every day. Pouring over his concordances and bible translations in an attempt to fully assimilate the deep-teachings of Franz. My grandmother studied the "Harp of God" during her initiation into the Org.
The two of them knew the old doctrines inside-out and I learned from them. What I believe is sad for so many of us is the time wasted. It was akin to learning to make really fine buggy-whips (I know, they're still in use in some circles but not for driving horses - but maybe "Ponies") or button-hooks. Obsolete knowledge? Actually, the analogy isn't very good because buggy-whips had a legitimate use. This knowledge was spurious/apocryphal.
RIP - WTBTS