I think that if most JWs knew these teachings, they would bail out of WT!
I never knew that the Bible Students continued on for the first 35 years of my life as a JW. That being said, once I started reviewing their teachings, I found them to be just as nutty as JWs. I think 99.9% of JWs would view them as apostates that splintered from the WTBTS, even though it is the other way around.