Hi Chris.
The Elmer Quizzes were designed to be brutal. They ask the most insanely difficult and 'why would I need to know that?' questions. The purpose is to truly seek out the most knowledgeable among us. As far as the study required, I would say it's a combo of three things:
Yes, they are definitely Extra level questions
But the questions require more than just Extra study, they require real world experience. Many of the questions are answerable by people who have tried things and failed or succeeded.
Lastly, I would say there is no reading to be done. Just dive in and expect some pain. This said, because the questions are so tough, the required score is acceptably low. I then look at the answers and determine where someone fits in. And yes, I occasionally disregard the score and just look at the knowledge that I see is reflected int he answers or in the conversations I later have with potential Elmers.
To be clear, the Elmer concept at Ham Community is sacred. We're really looking to have people who can answer a question authoritatively. Something that bothers me on many forums is that you do not know the level of genuine knowledge and competence your interlocutor has. Just because someone is an Extra does not make him a safety expert like say (sorry to single you out Tom, but @W3TDH who is leagues above the rest of us). Ask Tom a question about safety measures and you know you're getting a true and tried response. He does not go onto the Internet to 'look it up', he's learned it, lived it, multiple times over.
Sorry for the long answer, but it shows you how much I care about this concept. So yes, absolutely, zero shame, take the quizzes 😉 And then, like going to the dentist, feel free to hate me 😇 for the ridiculous tenor of the questions.
Jim
PS> Now I'll go and see what's wrong with that other quiz that wasn't working... 😰