They have 2 smartphones

I’ll have to try one of the newer ones someday. The first (and only) tablet I got had nothing like that. Once you logged in, the only way to log out or switch users was to do a full device reset (which of course would remove all apps and data). It was a dealbreaker problem - kind of made it useless as a household device that could be left on the living room table for anyone to pick up and use. At least Chromebooks have user accounts.