I just created this account to support your opinion. I am an engineer and meetings are part of my job. Even sudden meetings standing one. The whole idea was to mute the phone without looking for the phone or checking the screen. This kind of little thing made me feel iPhone was the one for me. Unfortunately, it would be a perfect phone without that button. But I guess we will get used to it anyway. If you ask me Tim Cook is a good seller not a smart man like Steve Jobs.The more I think about it, the Action Button on the iPhone 15 Pro is going to make my life much harder -- specifically because it replaces the mute switch which is super important. By being a physical switch, you can just feel if you're on mute without taking your phone out of your pocket. This is something I do daily when in meetings and other scenarios where I don't want my phone to ring. With the Action Button, you have to press and hold but you don't know before if it's already on mute or not. Maybe you can feel with haptics -- don't know. But still you're going to have to press and hold just to find out and undo it if it was already mute.
They should have added the Action Button in addition to the mute switch. There's plenty of room.
(Also never liked the power button moving to the right side. I hit that way too often accidentally. Should be on the top like iPhone 1-5. Then you can stand it on it's side too).
Push the button, are you sure it is silent, check the screen, and after a couple of minutes check the screen again. You are in the meeting. Not good.
Yes as an engineer also my job and I am a part of innovation and improvement. I know it is not the end of the world but let's not fool ourselves there are many ways to provide that action button kind of thing for the user. And it shouldn't be by getting rid of the one only unique(!) thing about the iPhone.
Bring it back Apple.