Simply all they would have to do is prove they have evaluated modern professional practice and then explained the other research of alternatives that they can ethically share with their clients.
I include my previous blog post that says simply at least 49% or more of modern scientific evidence is misleading trash.
Yes I do say that and so does a lot of genuine authoritative websites . . .
But as I said anyone can publish whatever they like now-a-days so maybe all these websites are wrong as well.
Personally I like what the Law Courts ruling, no expert is allowed to testify to any expert opinion until that expert opinion has been accept by the vast majority of the scientific community ! ! !
To my mind if a scientist wants to be able to publish their findings, then they need similar scientific finding independently found in at least three overseas countries ...
https://steemit.com/health/@crok/why-your-health-professional-is-just-perfectly-wrong