Worth replacing the screen?

We use Google Fi and use the protection plan. My wife received the certified refurbished after her Google pixel 7 pro bit the dust. After 4 days the screen has died. She has gone ahead and ordered the 9 pro because these 7 pros have been nothing but problems over the years.

Backstory done here is the issue with the "certified" refurbished they provided. The screen is completely black and unresponsive. Android Auto connects and when I call it rings. Rather than deal with warranty wife wanted me to take a look at what could be wrong. I found a tiny prick in the ribbon cable of the phone that looks like a faulty tech install. But as I wanted to be thorough I took the whole thing apart and found the below picture on the motherboard in the bottom left corner. It's as if the motherboard was ground with sandpaper or something. Is it worth getting a new screen (as I clearly voided the warranty by opening it up and checking)? Or would this motherboard problem cause future issues down the road?

Side tangent. Using a graphite sheet that disintegrates when removing is a horrible way to cool down the phone. I'd probably have to order one of those as well as a screen to just fix the screen.