No one said she or her material is cult-related.
In my short time here, I have seen plenty of discussions get shut down for not being "cult-related."
I have been to a Doreen Virtue seminar. She did some readings like John Edward and then gave some interactive instruction on how to read auras. There was a slight promo at the end for her class in Hawaii, and she sold books and tapes in the back.
She did not, however, do any brainwashing techniques, embarrass or humiliate people publicly, hypnotize people into feeling fearful, do a hard upsell or any of those other things that would make her into a cult.
Hay House itself publishes books, tapes, and new age gifts. It sponsors workshops by its various authors but these are not part of some sort of juggernaut like a Landmark.
You may disagree with Louise Hay's positive thinking philosophy but that does not make her dangerous. And so what if she studied with the Mahariji? I think the Beatles did too, didn't they? Boy, you better go out and burn that copy of "Imagine" then. It's based on new age beliefs!!