No, as you can see in the video the browser lists available devices and the user then selects from that list. The website only ever sees the device the user selects (if any); it can't read the list itself.
IIRC there _is_ a separate standard that allows websites to scan for nearby Bluetooth devices but it's via a completely different API with its own separate permissions system.
IIRC there _is_ a separate standard that allows websites to scan for nearby Bluetooth devices but it's via a completely different API with its own separate permissions system.