What people seem to forget is that Oprah is in show business. She benefits financially from supporting these celebrities. And they benefit from her as well. It's a business.
The thought seems to be "Oh, if Oprah gives whoever a thumbs-up then that is THE seal of approval." And then when she gives a thumbs-up to someone we find questionable, we take her to task about it.
It
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Celebrities associated with "cult-like" groups