However - no one can remotely disable my brakes over the air! So I can get to a position of not worrying about them much. In practice, I probably check the pads for wear every month or so. And that's good enough because I have an expectation that they're not going to change by themselves overnight.
With this airbag, the capability is there for someone to disable it without me noticing. I 100% agree they're not likely to do this intentionally. But it is under software control, as is the warning indicator, etc, etc. It's possible. And it's my life at stake.
Also, re #2 - my phones and computers aren't safety-critical, and no, my car does not have remote functionality. It's one reason I don't drive a car with over-the-air upgrade or CANBUS access functions. The safety benefits of more modern cars do not outweigh the added risks of turning them into internet-of-shit devices, for me.
In this instance, if I need to check the safety of my safety equipment before using it, that's a negative for me.
As a daily motorbike rider, I can definitively say that I will not be buying one of these because they have the capability to remotely disable the functionality. That's an absolute no-no for me.