I don't see how that applies. Steganography cannot be used to hide encryption on a large scale because all steganography techniques depend either on the obscuri

I don't see how that applies. Steganography cannot be used to hide encryption on a large scale because all steganography techniques depend either on the obscurity of the technique or on disguising encrypted data as other opaque encrypted data. You couldn't e.g. use steganography to hide that you're accessing a website via TLS because the client needs to know how to communicate with the server, and there's no way to make that possible for arbitrary citizens but not for government agents.