Its a wonderful and sad news altogether because Elijah chose to go back to the west to continue whatever he left behind but at the same time he is teaching Buddhism to the westerners and those who are interested in his own way.
I am very sure that these highly attained incarnations take on the form in the west because they would like to 'penetrate' the western world and you know what, in future we can have teachings without translator!
I look at it this way, whether or not they choose to be a monk in the monastery or a layperson, they have their reasons for it. Maybe for something bigger in the future?
As you can see below, they only return when needed and in any form they find easy to benefit us.
Some of the points I find relevant to this topic.
"The first Western tulkus were actually only half-Western: the sons of Tibetans who had married Western women. But there are presently about a dozen or so tulkus who are completely Western. The best-known are probably Lama Osel, who is Spanish, and the American woman, Jetsunma Ahkön Lhamo. They were both recognized in 1987, but the circumstances of their recognition could hardly have been more different. Lama Osel's parents were students practicing in the tradition. In fact, their teacher, Lama Yeshe, was recognized (first by Lama Zopa, Lama Yeshe's principal Tibetan student and himself a tulku, and finally by the Dalai Lama) as having reincarnated as their son. This is about as "official" as you can get. Jetsunma, on the other hand, had no contact with Tibetan Buddhism at all. She was teaching a meditation group in Washington, D.C., thirty-nine years old and the mother of three children, when she made contact with a Tibetan teacher, Penor Rinpoche, who subsequently recognized her as the incarnation of the "original" Ahkön Norbu Lhamo, a prominent woman teacher of the seventeenth century. Of course, adult tulkus are unheard of in Tibet; it just never happens. Yet as Penor Rinpoche said, "
We cannot say for sure who is going to be a tulku. They return only where they are needed. And they have the freedom to take any form they want."
And it is Western Buddhist teachers who are doing this. Of course, there have been, and still are, excellent Eastern teachers who have adapted to the special conditions that they found in the West. But Eastern teachers, however good they might be, are bound to remain Eastern; we might even say "foreign," to some extent. A culture needs people from within, so to speak, in order to make any import its own. And the inverse of this principle also holds: Westerners, however good they are, have to learn Buddhism from the "outside." This creates difficulties of its own. Yet the fact remains that there are Western Buddhist teachers who are transmitting the Dharma in a way that is quite as authentic as that of Eastern teachers."