I would imagine that admitting fault is a bad look when it comes to fighting the lawsuit that inevitably comes after. Hard to claim you’re not liable when you’ve made a statement saying it’s your fault.
I don’t know how to do it, but I know it’s possible to get your motherboard’s HDMI port, if it has one, to display the output from the GPU. Might help you hold out if you’re not otherwise looking to upgrade.
That’s because the arbitrators are hired by the company. Unless it’s an egregious situation, who’s going to side against the people signing their paycheck?