This change locks you out of the subscription content, yes. The author went on to suggest a likely next move for amazon was to apply the same restriction for y

This change locks you out of the subscription content, yes. The author went on to suggest a likely next move for amazon was to apply the same restriction for your own books, and that maybe you should create backups in that scenario. This is the section I was quoting. If you believe the authors suggestion that amazon will take these next steps, as I do, then the suggestion to “maybe” backup your content in that scenario is flawed. Once they lock you out it’s too late — backing it up now is the correct response.