He implied they were remoting in after he blocked network traffic. It could easilyl be a standard exception handling approache when it can't call home and fetch latest settings etc. It might not be malicious - not defending the architecture, just think that there is an assumption of intent here.

Whether they remote into his device or it kills itself is irrelevant except that if it's local code that's even worse, as they've programmed in future obsolescence. That is indefensible, full stop, do not pass go.