You are missing one impotent aspect. The problem is that this is a war of resources. In the end a government can almost always get access to the end user device.
What we have to fight first is the dragnet. Government just sucking up all communication. This can be archived by end to end encryption even if the computer used are not secure. This forces government to compromise every individual enduser device, such action is impossible on the scale that they do now.
This means the have to limit the amount of people they attack. Once we have archived that, we need to massively improve on end user device security. Secure elements and separate smart cards are decently the future.
Having a trusted Smart card for your encryption needs is decently the future. I already use a Yubikey over NFC when sending email.
You need to stop thinking about absolute security and start thinking about the cost of mass surveillance.
What we have to fight first is the dragnet. Government just sucking up all communication. This can be archived by end to end encryption even if the computer used are not secure. This forces government to compromise every individual enduser device, such action is impossible on the scale that they do now.
This means the have to limit the amount of people they attack. Once we have archived that, we need to massively improve on end user device security. Secure elements and separate smart cards are decently the future.
Having a trusted Smart card for your encryption needs is decently the future. I already use a Yubikey over NFC when sending email.
You need to stop thinking about absolute security and start thinking about the cost of mass surveillance.