@Nitty-gritty.
The idea that by being baptised into their religion means agreeing with all that they teach runs into a problem.
The teaching keeps changing! The teachings a person accepted without challenge at the time of their baptism, might have been thrown out and are now no longer acceptable. But the jw cannot now openly disagree with the party line or will be made to face the consequences.
Secondly, at baptism we all agreed that we would be an ordained minister in harmony with "God's spirit-directed organisation". When we discover much later that God's spirit is not leading the F&DS we either cancel our membership and stop ministering, or (pimo) hide out all the while keeping our heads down and not actively stirring the pot.
It's a very sad state for any one to be living in. Fear of men (GB and Elders), who you unknowingly handed over your power to when you said "yes" to those baptism questions so long ago.