If the GB released an "new understanding" article tomorrow dismissing the 1914 math, 99.9% of JWs would accept it
That is never ever ever going to happen for the reasons I gave:1914 is JW standing.
But let’s say that 1914 teaching becomes defunct. You are right that JW are still convinced on the org and in the Bible and that is because their faith doesn’t depend on it. JW are convinced that God is real and the promise of eternal life and relief is true. It doesn’t depend on wt.