It probably has already been said that the "overlapping" generation addressed the fact that the members of the GB were getting older and older, and the WTS had to explain why younger and younger men were being appointed, most who claimed to be anointed long after 1935 when the WTS taught that the calling of the ended had ended. The WTS had to adjust that date of 1935 because so many more jws started self-identifying as "anointed" and the # was going up not decreasing as the WTS previously said would happen. Of course, the WTS suggested that many of these people were "confused" and were not real or genuine anointed. "
As Jesus had foretold in his illustration of the wheat and the weeds, it had long been impossible to distinguish wheat from weeds, genuine anointed Christians from impostors.(
For example, we cannot confirm which of the Reformers of the 16th century may have been anointed Christians.) (2012 Brother Splane pointed out that in an illustration, Jesus indicated that there would continue to be genuine anointed Christians on earth to defend the truth) (2000The number of genuine anointed Christians is dwindling, yet it seems that some of them will still be on earth when the great tribulation begins.—1/15, pages 12, 13.)