https://smartdpk.com/simplifying-win...topilot-locks/
This requires you to be an actual refurbisher (20k+ devices a year) and it does indeed work.
But other than that you are kinda stuck. I've tried everything aswell except for replacing CPU, which as far as I understand, is the solution

Another method of bypassing is just installing windows home. There's no autopilot/intune for that.