Apple Self Service Repair 2021 MacBook Pro A2485

Hi, I have a broken 16" display but I can't afford to pay 850 to get it fixed - if I replace the display with a donor screen, from a dissembled identical model, will I lose any functionality/ will Apple add a watermark etc?

If it does lose functionality etc, has anyone used the self service repair website from Apple to order parts and use the software configuration process? I ask because I want to know if I buy the cheapest part that also requires a Software Configuration (Lid Angle Sensor), if this will then 'reset' the entire display to allow the device to work fully as normal?

Thanks for any help! :)