In my opinion, questions about specific details of vehicle features or operation are not appropriate for a shareholders meeting. We all have our own list of specific things we want to see fixed, improved, added, etc. You could get just a few dozen Tesla owners in a room with Musck and spend days talking about those things if you could keep him in the room. At the shareholders meeting there is less than an hour of Q&A time available.
I am sure that Musk is aware of such issues. If you have ever had any experience managing a complex product you know that you have to prioritize issues and keep in mind which problems need to be resolved so as to avoid negatively impacting sales, and which of the many requested improvements should be focused on so as to increase sales. It is a non-stop juggling act.
Musk has stated more than once that "When I look at the Model S all I see are the things that could be improved" (paraphrasing). He knows more about the car's defects than anyone here on TMC.