Don

The question is not who might teach, for Paul says anyone might.

The question is who will listen to any particular teaching.  And if for some reason one feels they should not be listening, then to leave without commotion.  You can discuss any concerns later with the elders in oversight.  I am assuming a crowd and not a small group teaching where a question might be appropriate.

I personally have left some teachings when they used what I deemed to be manipulative tricks on the audience.  I have also expressed my concerns to the leadership afterwards in other cases where I thought the teaching was flawed enough to cause harm.