Well either that or they are choosing the cheapest way to resolve the problem which is what I am more inclined to believe. It would cost a lot of money for AMD and their board partners to do a formal recall worldwide so RMAing the CPUs that die is much cheaper. Plus if a CPU performs 5-10% worse today than it did 5 months ago, that could be considered as user problem and not a reason for RMA. Honestly the resale value is probably gonna be horrid after all this finishes, least for vanilla zen 4.
PC Specs: CPU: 7800X3D || GPU: Strix 4090 || RAM: 32GB DDR5 6000 || Main SSD: WD 2TB SN850