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 own an nothing phone too, and I had the same thing. Same thing had my dads phone, Samsung device. Everyone is doing it, it’s not just nothing.