I’m asking how is that possible to break a component inside the phone via updating.
I’ve never ever changed a component (be it a camera, flash or even an IC on the motherboard) because an iOS update broke it.
About the video:
Imagine you can't boot Windows after updating. You take out the graphics card, boot to Windows successfully erase the driver and place the card back in.
It was a software bug that never actually broke anything (hence why she was able to put the speaker amp back in with no problems).