This is also going to be a body blow to privacy - if BigTech have access to your private keys, so will the government and both can abuse it. The idea is to force you to "save password on device" (whether you want to or not) so that when a government authority gets access to your device they can also easily access to all your internet accounts. US courts have already affirmed that it is legal for the police to force you to unlock your device if it is protected by biometric (fingerprint or face scan etc.). Moreover, by forcing you to use your personal device to access some service, BigTech is ensuring that identifying you and datamining your personal data becomes more easy for them.