The question is "google assistant learns how to masquerade as a user" - implying that the Google Assistant will be autonomous, gain a will and start impersonati

The question is "google assistant learns how to masquerade as a user" - implying that the Google Assistant will be autonomous, gain a will and start impersonating users for it own purposes and benefit. That is an imaginative stretch into never-gotta-happen fantasy. The statement does not say "users will train it to have their voice", the statement was that the Google Assistant will do this on its own. Fantasy.