> The takeaway is that your children may grow up in a world where it's impossible to guarantee the government can't get into your computer if it really wanted to.

If your adversary is a well funded government you need to have:

Secure software

Secure firmware

Secure hardware

Secure staff who follow procedure

Secure location

Armed guards

Etc

Most people can not do all of this and this have been vulnerable to governments for a long time.

Suggesting that your mobile communications data was ever secure when it was available to your telecoms provider seems odd to me.