I assume medical websites are somehow kept vague in order to steer us to pay these highly regulated professionals a fee for a visit.
IE you cant/shouldn’t give blanket medical advice and if you do you may be liable if someone has a bad outcome from the advice.
Regulations have been set up so you have to pay an AMA member to get any information that might be labeled "medical advice".
You can even get fake diagnosis and fake healthcare from chiropractors who are allowed to advertise themselves as doctors, and fake medicine from naturopaths or whatever who are also allowed to call themselves doctor.
I am using fake to mean unsupported by evidence in the form of sufficiently blind trials and whatever else is needed to qualify as scientifically sound (not the same as FDA approved).
Pretty weak “regulation” when you can get a “doctor” to prescribe you herbs and spices for your illnesses. Not to mention the tech startups that hand out amphetamine prescriptions written after an online telegealth visit by remote physician assistants and nurse practitioners (see Cerebral and Done).
There might be some regulation to get paid by Medicare and Medicaid services, and some requirements by insurance companies, but that seems entirely reasonable. There is little regulation on who is allowed to give medical advice.
The problem isn't information availability, it's experience and interpretation which is not something you can do on an individual basis 'on the side', hence the expertise requirement. If the subject matter at hand was as simple to deal with as "see X, apply Y, get result Z", then that would be great. But as this is not an exact science, such a method does not truly exist, and therefore cannot be made effective in a listicle on a website or other medium.