Who would need to press the power button to actually turn off or restart the device, right?
The setting to change this is also pretty much buried under Settings -> Special Features -> Gestures.
(Yes, I have no idea why the Assistant is in German when the phone is set to English either 🫠)
I loved how at first, I was able to rebind that stupid button to anything I wanted. Then that stopped and it became only Bixby. Horrible decision - Having a button that can launch any app you want is a beautiful thing that more phones need to get behind.