The “scan qr code” feature doesn’t need to be accessible through a permanent 4 tap gesture. If I’m understanding correctly, the QR code would only be used on day one set up, and only to sync to the iOS facer app. The QR code is already easily accessible through the watch app settings menu, and making it pop up through a gesture only causes a disruptive user experience when the gesture is accidentally triggered (which is very easy to do).