It would have made no difference: the hang was in the networking code & process, not the telemetry code (and whatever process that is in). Anything that sent a

It would have made no difference: the hang was in the networking code & process, not the telemetry code (and whatever process that is in). Anything that sent a message with the "bad" header type would have provoked the hang. As to why, dunno, presumably it's extra effort for an unclear gain. Telemetry code wouldn't be parsing hostile input etc. And it doesn't stop bugs like this either.