They wouldn't. This would be more like "your own device won't let you do x" because it has detected x, and software is designed to prevent x. There's a few pr

They wouldn't. This would be more like "your own device won't let you do x" because it has detected x, and software is designed to prevent x. There's a few problems though: If software including such 'feature' were open source, wouldn't you simply remove that feature? I know I would. If closed source, which party would be trusted to develop that 'feature'? App developer? OS vendor? Government? Network provider? Note there's good & bad ones among each of those. So how would you know it doesn't phone home? You wouldn't. And thus... back to square 1. Which (imho) makes that E2EE and "think of the children" are mutually exclusive. Either messages are truly private (and bad things may happen), or they're not (and bad things may happen anyway, or even worse things when citizen-hostile governments get involved).