Yes, I totally agree about the pace of technology. I've seen it/lived it firsthand. As an adult, I don't have any issues with supporting new technology if I can. However, the slowness has more to do with the FDA approval process from what I know, not peoples' willingness to adopt the technology once it's out there. Granted, the FDA process is there to keep us safe, so there's that.
Regarding DKA, an occlusion in the line (and failure of the alarm to go off) is just one way it can happen. Pumps can also malfunction and tell you they are delivering insulin when they are actually not. Granted, these instances are rare, but they happen. My endo advised me not to get the Omnipod, for example, because I go into DKA very quickly and the pods are known to be quirky. That said, for someone who isn't prone to DKA and really, really needs a tubeless device, I think Omnipod is a great choice. It's all about individual factors.
My point was only that, IMO, these occurrences are less likely in "proven" devices. I would personally not have any qualms with an adult pioneering a new device, but if it was my kid, I would have second thoughts based on my own experience with T1D, and would probably opt to stick with a device that is more proven/tested in the pediatric population. Again, just my opinion, so take it for what it's worth.