That's not an unforgivable sin in that there is still time for them to wake up and correct course.D:
inevitably though, each correction, tacking, has seen them, wt writers, getting mired deeper & deeper into their doctrinal morass. to witness:
the generation in the 1914 kingdom debacle. from it expiring
1) 'millions now living will never die'.(there will not be > 2 million Armageddon survivors that were alive in 1918!!) that is >2 million faithful, baptized > 106 year old publishers. to
2) turning to the overlap of gheezer groups, ending in 2075 to
3) the anointed generation that will die before Armageddon, (when Jesus said they will not pass away until after all is ended)
P.S 1 & 2, impossibilities, false prophecies,
3, tacking against the wind, "Pneuma", the HS.