The foundation that their religion is built upon is 1914 and the choosing of the FDS around 1919, based upon 1914.
The reasons for the GB's claimed authority are these two inter-connected dates.
I believe they know very well how a few minutes spent investigating these baseless claims on Sites like JWFacts.com will prove to any person with two sparking brain cells that the GB are self-appointed bul**itters.
So, I do think that they have paved the way to make 1914 fade away like 1925 and 1975 did, but that they have a problem with totally dropping the whole nonsense. For a good while these dates have simply been obliquely referred to, and JW's have to accept them as a "given".
I think young and new JW's do so, feeling that older and more studious JW's have done the study on this and proven the nonsense to be true, so as they accept it, it must be, Millions of JW's cannot all be wrong can they ?
But in this age of freely available information and thought from a multitude of sources, surely the days of JW Bullcrap are nearly over ?