I guess I'm looking at this question too simply.
To me - if you are a witness, you attend the meetings, you follow the protocol, you socialize, you read the material, you speak the speak - then you must be accepting of the lifestyle it promotes. It's hard for me to split the two - if you don't accept something and say you don't to yourself, but show acceptance by attendance, service and in all other ways being a JW, then you are in actuality accepting. The math in this case is a small thing - it's the greater power that the acceptance in protocol lie.
If you don't accept the math and are willing to say you don't, then that is an indication to the witnesses that you are not accepting of their protocol at any number of levels.
I guess for me its like anyone grumbling that the JC is wrong but yet they still go along to the meetings, knowing that JC's are still being held. It's like grumbling that the 2 witness rule is wrong and sister xxx being disfellowshipped in a JC is wrong, but then going along to the meetings. It's like saying, shunning is wrong but then accepting reproof from an Elder from talking to that one shunned person in the KH. I can't split the two. sammieswife.