You might want a dedicated device to control some lights or scan some barcodes that you can hand off without handing off the most expensive thing you own, that

You might want a dedicated device to control some lights or scan some barcodes that you can hand off without handing off the most expensive thing you own, that unlocks almost every piece of personal data you have. A built in keyboard could be a failure point, and gamepads are well known to fail. I'd trust five layers of frameworks and thousands of lines of code more than a cheap switch. If they really wanted maximum reliability, I would prefer they charge the keypad with NFC and talk to it over either BLE or just the NFC itself.