people were dim enough to religiously follow her methods without accepting she's not a lifestyle guru but just another person with an idea and building a brand, that's their problem
Sounds like 'a person with an idea and building a brand' is a description that one could use to describe a lifestyle guru, tbh...
Anyhow. I own her book, it was actually nothing particularly new or useful to me personally IIRC... But I'm a chaotic slob that has been keeping a system (not necessarily order) by merciless decluttering and a rather systematic approach.