I loved the science-fiction twist on shamanic traditions, but it's ultimately a little weak.
In the first place, allowing shamans to enter the spirit world as easily as entering a virtual-reality cheapens the experience — now almost anybody can be a shaman, but there appears to be practically no regulation of a profession that is at least as potentially dangerous as that of Doctor.
Then there's the reactions of the public. It's one thing to expect the public to be distrustful of the shamans, and I have no problem believing that shamans would be blamed for all sorts of ills — but to have a family call in the priest for last rites, then watch the shaman save their family members life, and immediately turn on her just doesnt ring true.