Strange iPhone 12 Power On button behavior

Hope this isn't a stupid question (probably is), but why does my iPhone power on with only a quick flick of the Power On button instead of having to hold it down until the apple logo shows like every instruction I've ever read? When I first got the phone, it would only start up by holding down the button until the logo appeared like it is supposed to do. However, when I now go to power it on after shutting it down completely, just pressing the power button down for a fraction of a second and without holding it down, the logo appears in a few seconds, and the phone powers up. It never did that before to my knowledge. Why would my phone start up so incredibly easy when with every other iPhone in the universe, you have to hold the Power button down. Makes me wonder if it has been compromised somehow. I've read about the NoReboot thing, and even though I don't think it has anything to do with that, I cannot help wondering why the Power button is so hypersensitive that I don't have to hold it down to start the phone. Things that make you go "hmmmmm..." Thanks for your help!