By your definition no closed source company can act responsibly. If that is your definition, they indeed don’t act responsibly, my point is that they appear to ship security updates for at least a decade after the device got released, which seems pretty decent. And they have a good record on quickly responding to any security issues and keeping everything up to date.

So they’re doing pretty good. Would it be nice if they go open source? for sure, but for a closed source system, it’s currently doing great.

I think it’s closed source indeed, but their support window is very long at the moment, so while you’re right, at least until now they’re actually acting responsibly.

But is that the fault of XML, or is the data itself just complex, or did they structure the data badly?

Would another human readable format make the data easier to read?

There are people who find XML hard to read?