I might be in the minority but here is a real use case. I use a bluetooth connection with my home phone system. I've been turning off b/t on my iphone to disconnect the network. Now I can just use the toggle to disconnect. Much more convenient.Its a solution to a problem for the minority.
For the past 10 years, off has meant off, whether it be WiFi or Bluetooth.
This is Apple taking a step back, rather then one forward.
Of course the other way to get to the same place is to include an option to not automatically connect to network for b/t devices.