I also work with teachers and understand that they just want things to work. Five years ago, I would agree that they should not have to think about it but in this day and age, I now agree that it is inexcusable for teachers to not take responsibility for learning at least the basics of technology. It is too integral to our lives to not take the time to get some basic skills. Their students are fast leaving them behind.
I started with Moodle about four years ago - I am no expert but have taken it upon myself to become familiar with mysql and php so that I can take advice from the community here and make Moodle work in our environment. I work with Open Source and non-Open Source software and hardware and I have to say that I am able to find fixes way faster from the open source community that I can from the vendors that I pay thousands of dollars for for support.