I agree with you except that weight training/exercise has not only been shown to be safe, but also healthy in kids with normal health and development. There are extremes for sure, but the old adage that weight lifting will hurt you if you’re too young hasn’t held up to current research on the topic.
Too little CSF leads to the brain crushing itself under gravity. The brain is almost entirely lipids which contributes to its buoyancy in CSF. Take away too much CSF, nothing for it to float in. Too much CSF? The skull is a fixed volume (in adults) so the CSF compresses the brain tissue. In kids, the sutures or junctions between bones of the skull are still flexible. This allows for childbirth and normal rapid brain growth. It’s easy to tell if there too much fluid around the brain in a newborn because their front soft spot (Fontanelle) will bulge or become firm. A bulging fontanelle also occurs with other pathologies like meningitis.
Do you really think that doctors don't keep up on education? All doctors are required to do continuing education every year to keep up to date on the latest advances. Most I know go to national conferences to learn more about their speciality. Then you have the portion of doctors that conduct research and actively advance medicine. Most doctors I know (anecdotal, I know) are constantly striving to do more, to learn more because they care. Doctors know how much responsibility they have to help people and even save lives.
That’s horribly ignorant considering that many diseases have a large genetic component and people are rarely 100% compliant with the things they need to do to prevent a disease. Even when a doctor lets them know how to prevent the disease. How would this work for a disease, for example, like Alzheimer’s where the onset is much earlier in life (40s) but doesn’t manifest until much later in life and has no diagnostic test at age 40? What about hypertension where the majority of it is idiopathic? Would the doctor be blamed for all this despite practicing evidenced based medicine? I’d argue that a lot of diseases are this way and placing the blame on a doctor is a way to shift personal responsibility.
I’ve worked as a surgical technician and can say that this already occurs in most hospitals. It was within my scope of practice to help the doctor suture at the end of the case as well as apply staples and bandaging so that they didn’t need to.