You already failed at that. If you cannot get us (people in a bitcoin forum) to read your topic, how can you get newbies and skeptics to listen to you. It took my time but I read the entire OP, I don’t think you should be talking  about the technical aspects of bitcoin to newbies as an introduction to Bitcoin. Neither do I think that newbies would be interested in the environmental impact of mining. When introducing Bitcoin to a beginner, stick to the simple stuff, use layman terms and do not try to impress people with your technical expertise on the subject. Most people are interested in bitcoin as an asset, you can hold their interest by talking about that.