I think there's a difference between frauds and sellouts.
Frauds are those who claim ndn blood (and can't prove it) and use it to justify teaching the masses- charging money or not. They are the ones that claim they have been given the responsibility to teach non-Indians. They also mix and match different spiritual paths into one big spiritual soup.
Sellouts are real medicine people who, for reasons of greed and ego, are out there teaching the masses in a very public way.
I'd add a third category. I'm not sure what to call them, but they are the non-Indians who you'll find professing to be Sundancers, pipe carriers, sweat leaders, etc. They may not be doing it publicly, but they still use the argument that these spiritual ways were given to all the people, not just Indians. They claim they have the right to do these things (indeed that they are special), and get very defensive when the subject comes up. They live in the fishbowl of entitlement.
(My emphasis.) There must be thousands of the third category in Europe alone, and many of them are very public. Before you would find them at New Age meeting places in both large and small cities, then they got their own Internet sites, and finally, now they are proliferating on Facebook.
I have noticed hundreds of them operating in the Nordic countries (Scandinavia and Finland) over the past 40 years. My experience with them is mostly in Norway and Sweden. I have argued against such people for at least 30 years.
Yes, they are very defensive, and usually they get very angry with me when I gently expose their almost complete ignorance of the Native American Nations' demography, ethnography, geography, history, languages, and religions. Many of them seem to sincerely believe there is just one Native American people with one language ("THE 'Indian' Language") and one religion (THE 'Indian' Religion). Many of them claim to have taken lessons and initiations from one or more of the notorious frauds that can be looked up here at the NAFPS forum. A number of these frauds have toured Scandinavia, where they meet little resistance.
Almost without exception, they have coined an English-language "'Indian'-sounding" name for themselves, but they do not pretend to actually be Native Americans, so i'd not call them 'pretendians'. — When looking at Colville girl's description, what would you call them?