The data is still on the device. Only the password "vaults" have been wiped, obscuring the presence of the data and removing its access.
Look, you can twist the words however you want. At the end of the day, if a CBP agent or Federal prosecutor clues to the fact that you're using this functionality, their interpretation is almost certainly going to be "'late2part is hiding something!", and they will bring their (considerable) powers to bear in response to that, in order to figure out what that is.
Your indignation about or lack of understanding of that reality aren't going to change it.
Look, you can twist the words however you want. At the end of the day, if a CBP agent or Federal prosecutor clues to the fact that you're using this functionality, their interpretation is almost certainly going to be "'late2part is hiding something!", and they will bring their (considerable) powers to bear in response to that, in order to figure out what that is.
Your indignation about or lack of understanding of that reality aren't going to change it.