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Public opinion is definitely in favour of Apple in the encryption debate. Governments (including tax collectors) should just get used to the reality that strong encryption methods are available to everybody now. They should adapt, even though jobs like tax collection might be more difficult in the Bitcoin world.
This assumes that the Apple vs FBI dispute is actually about encryption which it is not. It is actually about protecting Apple's DRM and Apple's Orwellian business model. The FBI would be content with just two things 1) The source code to IOS and 2) The ability to install software on an iPhone without having to get Apple's permission. This would make the encryption equivalent to say GNU Privacy Guard the software that Edward Snowden used for his leaks. Of course in order for the encryption to be secure one has to use a strong password. In the Apple vs FBI case, the FBI has reason to believe that the terrorist in question used a very weak password. This is like trying to crack a Bitcoin wallet "secured" with a 4 digit number. So the dispute is actually about DRM rather than encryption.
The Apple DRM that is currently inhibiting an anti terrorism investigation where the government has dotted all the legal i's and crossed all the legal t's is the
very same DRM that Apple used used to censor Bitcoin from 2009 to 2014.