AMA has 217K members, down from 278K in its heyday in the early 2000s. Still seems to me the AMA can't be written off if you want to treat self-selected surveys with 3K responses or less, as gospel. In the "heyday" the 278K represented just under 30% of physicians. These days it's been reported to be between 18 and 25%. The AMA's endorsement of AHCA wound up losing them some doctors.
On "tossing away" surveys, clearly neither you nor I are in the room at the time, but these surveys aren't exactly coming from Joe the Plumber's Daily News.