Currently, this is roughly true. But there's a decent chance it will have a killer app within the next ~5 years, and then adoption will grow quickly. At that point, it would be nice to have a small library of videos/photos that were taken with the AVP in mind.

Regardless of the AVP's success, there will probably be some AR/VR device that becomes popular, and can read this format in the future.

I had to google that to even decipher what it is, and we have way too many Apple devices in our house :)