That's not what that video was about, it was showing the difference in length between the "Call Ended" message staying up on Android vs iOS. On iOS the call ended message disappears almost immediately and goes to the previous screen. On Android (And how it used to work on iOS) there is a ~2 second delay before the phone call disappears from the screen. If both sides of the call go to hang up at the same time, and the other phone hangs up slightly before you, you can accidentally redial the number under the hang up button.
I feel like you're gaslighting me, but here is another video showing the actual accidental redial happening: watch?v=k3c4dW-QSLo
This is done on an iPhone 8, but I've tested it on iPhone 14, 13, and X as well and it does the same thing. My friend on an iPhone 13 said it didn't happen to him when I described the problem; Next time I saw him, I showed him it happening on his phone. He doesn't have an issue with it, like the two of you, but that doesn't mean the phone doesn't operate the same way. This is an iOS "feature" so it happens on all iPhones that can run iOS 15 (Maybe 14) and newer.
Idris, the phone does do it. I'm not telling you to change how you use your phone, but if you try it for yourself, you'll see the phone app disappears immediately when the other end hangs up. If you're hanging up first, it won't happen to you; It happens when the other side hangs up first while you're going to hang up