Hi,
It's still in the development phase for aircraft. As discussed in this forum, there's still a range problem with aircraft, especially at different orientations of the model relative to the TX. I also read that quick change of direction can also affect the system. IMO, eventually it'll all be worked out and probably be released as a high end system and used mostly IMAC and jet modelers. After a period of time it will filter down to the sport radio's.
Being a geezer myself, I'm not sure what their objection would be. Maybe someone with some knowledge on the subject should explain it to them, I just don't see a downside, except cost.
BRG,
Jon