It is good to get the other side of the coin... but I do have a question for you;
Do you have links to the (her) article you are referring to?
I am aware of her book, "Probiotics, Natures Internal Healers", though I have not read it and would believe that she is a proponent of probiotics due to the title alone.
I believe there is a Yin and Yang to all of this... A time and\or purpose for everything.
I do have a problem with her seemingly strong negative view point on SBOs though, keeping in mind that one would not want to over do it.
My reasoning behind this "thought" is primarily due to humans being exposed to SBO's through both skin and food contact, throughout their evolutionary history until such time as they saw fit to sterilize the land with fertilizers, herbicides and\or pesticides, sterilize foods before, during and after harvest, packaging, production, etc., and now radiation to "sterilize" everything on the table.
A daily, weekly, or even a monthly bath (perhaps with anything but a rinse with water) was not even common until very recently in more affluent cultures... so I suspect that SBO's are a part of, and can be dealt with by, a healthy animal\body just fine when exposed to "normal" (whatever that is) amounts of SBOs and I question Natasha's reasoning; not her "scientific" understanding.
Why do kids when young eat dirt?
Now all that said, one must also take into account that adaptation\evolution is about survival of the fittest... Viability of weaker genetic humans being fereted out through a low survivability and low reproductive success rate.
Please note that adaptation to environmental stressors is fact and I am not arguing evolution\creation here, I included the term evolution only to clarify.
Being "fit" in a "natural" world included the ability to deal with these bacteria and yeasts both good and bad in a world without antibiotics, Clorox wipes, and bulk sterilization techniques. So accepting the good with the bad here, a course of SBOs and\or probiotics may be good for one person's health while being bad for another's who may have began the adaptive change to deal with living in a sterilized environment\world.
My point is that our ever growing "fight" with bacteria and yeasts, both good and bad, have upset the balance... now nobody knows, or will ever know now what that balance is ideally supposed to be.