It's not about the public's perception of wavering, it's about the scientific outlets wanting to say "Yolk is bad!!" instead of "we now think egg yolk is bad because we found that the foo in the quux frobs the narl in a human's stomach lining". Not to mention the lack of apologies and retractions by those same outlets.
> it's about the scientific outlets wanting to say "Yolk is bad!!"
The outlets that want to say that aren't scientific outlets, they are popular media outlets and the marketing arms of entities selling diet fads and/or substituted products.
