If that is not disinformation then I don't know what is, it's the JWs trying to sanitise their past. The fact is that the WTS had a policy of whipping up enthousiasm among the R&F by directly or indirectly claiming the end is very near.
Far from being a spiritual activity it was in fact a commercial one motivating the -slave- work force to exert more effort to increase their book and magazine sales. They did it in 1925 and again in 1975 and in both cases blamed over eager R&F for the failed predictions.