Could be. Perhaps the union will respond to this issue sometime soon.
Note, however, that the stand-up includes no obligatory language. While it lays out "if carrier selects yes/no" etc., there's no obligatory words such as "must" or "will" or "shall". Any obligation to respond is, at best, only implied.
It's peculiar that they identify it as a "reminder", as though it's a one-way communication, similar to the "reminders" of certs and return receipts in the DPS whose windows automatically close after some number of seconds if you do not tap enter or escape. Was there a stand-up when those "reminders" rolled out, and, if so, how were those alerts classified?
The "reminder" from this stand-up requires a response to continue using the scanner, but doesn't direct employees to respond. I wonder what would happen if a carrier chose
not to respond to the scanner during RETURN2DU time, but just waited for the "reminder" to automatically close (as other reminders do), for both lack of compensation and lack of directive within the stand-up to respond to the prompt.