You know this is the point we should be focusing on now. Instructional designer or e-learning expert should have following skillset:
1) People skills
2) Creative skills
3) Knows how to gather information and create a structure.
4) Good Communication skills
Why? We are targeting those people who are an expert in their fields that's why they think what they said should be documented and I don't think it's wrong. However, it's better to put some cards in your sleeves before scheduling a meeting with SMEs.
1st Card: Listen everything what he or she has to say about it.
2nd Card: list down what you are looking for
3rd Card: Share your approach (Objectives of the e-learning) with them where you filter the information you think will be relevant to the course.
4th Card: Before they answer - ask them if they like it and if they have to say anything on that (used people skills here). If they say NO then convince them that this is not meeting with the objectives. In the worst scenario, you pretend that you like what he/she said and put this on hold at the moment and let it gooo!!!