Yup, I think some people can eradicate, but I've gotten rid of them for years, only to have an odd one come back here and there and just go with it now. (Since being meno they have been more frequent.) It helps me just to accept they might appear, as if I accept I won't be scared if and when it happens....and at times when I am really stressed and anxious one will pop back. Nothing like they used to be of course, as I can squish them. I have found I can't build a stress free existence, as I can't avoid all my stressers, and certainly can't avoid hormone changes....but in an ideal world, yep, itd be great to be able to eradicate everything that causes the problems. Everyone is entirely different of course, and some people use the techniques and thats it, sorted....
Maybe I'm not making much sense now, but in essence I agree with you, its possible, but I don't think its possible for me lol