My major worry would be bad sensor readings or software errors leading it to provide bad instructions on how fast you can surface, or how long you need to do decompression stops. Depending on the dive, it’s a situation where differences in the displayed numbers mean the difference between a great day and serious injury.
I really hope; but also expect that this is thoroughly tested.
Ideally, yes. However, a crash significantly increases the chances of diver error leading to an incident. Diving without a computer requires more careful adherence to a dive plan. If you lose your dive computer and haven't been carefully following a preset plan, you should generally start the process of surfacing immediately and do so with decompression stops that have as large a margin for error as feasible and then stop diving for the day (edit: or if you've been good at staying with your buddy, you use their computer while still adding a healthy margin for error).
EN 13319 may be sufficient, but I don't feel like buying the standard[0], to see.
Usually, you want to get PADI and NAUI on board for these types of things, and I don't see either, mentioned anywhere in the press release.
[0] https://standards.iteh.ai/catalog/standards/cen/5d35e933-ca5...
They aren't just training agencies. They also certify stuff. I remember seeing their names all over my stuff, but that was many moons ago (mid-1990s. I stopped diving, after I had my noggin worked over by a noggin mechanic).
I suspect that they are keeping their legal derrière covered. A lot of folks will probably use them as “in-dive” computers, like a Mares or Suunto unit, but that will probably be considered an “unsupported use case.”