That's the funny thing, I have had good luck over the past months getting my gut pretty much back to normal with the help of enzymes, kefir, antifungals, etc. I have had some truly magnificent healthy bowel movements over the last few months that made me feel like a teenager again (lol).
On the other hand, my sinuses have been nothing but problems during that time, and I have had post-nasal drip practically non-stop now for several years. Which leads me to believe that the candida/fungus in my sinuses may be more deeply rooted than the candida in my gut, and I am just reinfecting my gut every time I swallow my post-nasal drip (I am not one of those people who can just spit it out; it's too far back in my throat). So while I agree with you for the most part, I don't think that is the case with me.