Agreed. I assume if JMC had stopped representing SW, she wouldn't still be on their website. Obviously, even discredited and revealed as a thief and scam artist, she's still earning Jennifer Christie significant sums...
If you scroll right down to the bottom, it lists other prizes TSP was nominated for, other countries in which it and the sequels were bestsellers, and all the languages all three books have been translated into.
https://www.grahammawchristie.com/talent-library/raynor-winn
She seems like a bit of an outlier in terms of their other authors in some ways.
They seem to mostly be psychotherapists with various specialisms (insomnia, breathwork, trauma, burnout etc), life coaches, people who've done something inspirational and are in demand as speakers at events, campaigners who have written a book on their cause (termination for medical reasons, looked after children, painkiller addiction etc).
Their other memoirists seem to be mostly entrepreneurs, a teenager who survived the Manchester Arena bombing, an architect writing about living in a house about to fall into the sea because of coastal erosion, and joky 'so we bought a small holding' types.
It's clear that most of them very much have portfolio careers, with a professional life as therapists or psychologists or running businesses or charities or journalism, and that writing is just a small part of it. Some are speakers and podcasters rather than writers.
If you look at their RW page, while obviously it starts with the best-selling books, it very much constructs her as a 'prolific speaker', and a 'regular long-distance walker who writes about nature, homelessness and the health benefits of walking.'