It's all on borrowed time.
Moguls were added to the Olympics in 1992. It peaked with the god damn dinner roll, and has been overlooked ever since. I mean, give it credit, 1998 was a big year, but it hasn't been relevant for over a decade. Besides, why destroy your knees? Longevity? No.
Aerials became an Olympic sport in '94, and it has zero relevance (not that it had much to begin with). Even the Chinese are trying to buy medals by throwing gymnasts at aerials. Longevity? No.
I wrote a high school paper eleven years ago about why pipe skiing should be an Olympic event, and I still believe it should be. But it can't be denied that it is going the way of most sports - it will become so specialized that only a tiny handful of the skiing world will actually be able to compete. It is fine for now, but can it last another decade? Two decades? Really hard to say.