I have the same problem. It's called CYA. Now you can't say you didn't know whatever mundane problem they were discussing.One of the things I have noticed in my line of work is no one picks up a phone to ask a question on a jobsite. Everyone just emails back and forth and it ends up being 12-15 emails of back and forth when a simple phone call would have answered the question.
*I get copied on everyone of these emails and sometimes the question has nothing to do with me.