Are these people all study gods or is medical school just structured in a way that this works? If so, explain?
You might already have heard all of this, but in case you haven't.
For the preclinical years, almost all of the material you will be taught in didactic lectures is the same body of material taught at every medical school in the developed world. At a top ranked research school, they may have some Nobel laureates come out and give a few special lectures, and there may be some general information about where different fields are going which are bit more perceptive, but basically the same core material is presented. One possible exception is the Harvard/MIT HST program which specifically tries to have extra didactics on more cutting edge research issues, but the basic idea is the there. The other aspect is that at many schools, the teaching staff are a constantly rotating set of lecturers of very variable ability and interest in teaching.
So, if you're going to learn about kidney physiology and pathology, if you're interested in optimizing the use of your time to learn the key material, it may make more sense to rely more heavily on outside material which a lot of work has been put into high quality teaching, vetted by many editors and students. That's why many students focus more time on things like Pathoma, First Aid, etc. You could read syllabus or class notes on pathology, or you could read Robbins. If your school is pass/fail, then if you learn the base material, you are going to pass anyway, and probably do better on things like the Step 1. If it's not pass/fail, then you can still use external resources to get a deep understanding, and then just go over the course notes for any special stuff that your particular instructor is into and will put into the exam.
If your school has recorded lectures, why not watch the videos while you are on the elliptical at 1.5 speed (or faster depending on the instructor). You can watch more content faster, or even watch it twice, being able to pause and go back when you get confused about something. Watching things at faster speed and when you are moving may aid concentration and keep you awake. You also can get in better shape and have a longer life instead of sitting for 6 hours a day.
The talking head part of teaching, especially if it is an environment that discourages asking questions, just begs to be turned into video or other recorded content.
This sort of thinking is effecting all of education. Why have a mediocre grad student teach an intro physics section, when you can watch the lecture by the best professor in the world online? Or why not work through modules (Khan Academy style) or systems which have adaptive quizzes and focussed material? Going further, why even have live PBL sections when you can make online games that teach the basic concepts. You can have simulations on clinical reasoning and knowledge that guide you through cases and provide back up material and clarification and links out to even more information when you get stuck.
For the purely factual/didactic parts of preclinical medical education, there may be big changes going forward in the future. Market forces will likely mean that there will be Coursera type thing for 80% of the first two years of medical school. Save everyone a lot of resources. For better or worse. It just doesn't make economic sense for the medical school to pay someone to give the same lecture every year, especially when fewer and fewer people are showing up each year.
All that being said, I liked going to lectures. I would get distracted on minutia and fall behind studying alone on my own. It was also interesting to be able to talk to and ask questions of researchers and major leaders in different fields, and I at least know the faculty. I like the social aspect of class.