I'm genuinely confused how this is a thing. How are people rapidly pressing the power button 5 times in rapid succession without being aware of what they're doing?
Now adding a 3 second press after those 5 presses is solving the problem? Mine as well go back to opening the phone app and dialling the number.
For the needs you described, you want to go with power efficiency. Check to make sure your quicksync version can handle h265, and you'll be fine