The advocates are there to protect the patient from the Doctors!!
Many doctors will perform any procedure just for the money.
Advocates are necessary to prevent medical facilities (not just Drs) from taking advantage of patients who may not see things clearly, from illness, dementia, fear.
Y'know, folks like you.
Any doctor should have the freedom to make medical judgments independent of the government or patient "legal advocates." The patient is always free (at least until Obamacare) to find another physician with a different opinion.