Will the real Naomi please stand up?

I have read many of Naomi Klein's books over the years, from No Logo to The Shock Doctrine to This Changes Everything. She is a Canadian left-wing icon, with impeccable feminist, environmental and anti-capitalist credentials. 

I have also read many of Naomi Wolf's books - The Beauty Myth, Fire With Fire, Promiscuities - although much longer ago. As a respected and outspoken American third-wave feminist icon, her credentials too seemed impeccable.

But then Naomi Klein recently published Doppelganger (which, full disclosure, I have NOT yet read), and I find that Naomi Klein is apparently not the Naomi I once thought, but a rabid conspiracy theorist, a persona non grata for whom Ms. Klein is embarrassed to be mistaken, and a favoured guest on Steve Bannon's podcasts. She has been kicked off several social media sites, including Twitter, for her espousal of conspiracy theories about vaccines, geoengineering and other topics, and had a book "unpublished" due to grave errors.

How does such a trajectory occur? Was the old Naomi Wolf actually as right-on and reliable as we once thought? Interestingly, one ex-Wolf proponent has recently re-read The Beauty Myth and found it sorely wanting by today's feminist standards. Even in her prime, Wolf was a product of Reagan-era neoliberalism, and a new reading of even her older books shows that they have not aged well, it is argued. Academic papers on the book have found that as much as two-thirds of the statistics Wolf makes use of are spurious, cherry-picked or poorly-interpreted. 

I'm sure I will get around to reading Doppelganger eventually. Surely, Naomi Klein is still safe to read?