I would caution you slightly with applying this logic with too broad a brush. There's a reason other airlines vote down TA's all the time.

Many MECs go to their pilot groups try and sell the benefits of TAs that are then ultimately voted down.

I think JB pilots evaluated this LOA on its merits and understand that it will have ZERO effect on the ultimate TA/CBA we vote on/end up with.

Having said that, when they bring us a TA, I will scrub it line by line and make a decision to vote yes/no on its merit independently of what the MEC/LEC tell us.

Will I take their inputs/road shows into account when making my voting decision? Absolutely. But I won't vote yes just because they brought it to us and think we should vote it in.