It's a dedicated hardware switch. I'd count it.

The funny thing about that switch is that in 2007, I thought it was the best invention in the world.

It was a pain muting my Windows phones because you had to fiddle around with the UI to change the profile to silence the ringer.

That switch was on every single Treo device from the 270 onwards, and numerous feature phones had a hardware mute switch as well.

Not saying that Apple invented that feature for all phones, but if you were coming from Windows Phone, it was a giant godsend.