Following this topic. Also experiencing issues with controller this week. I sent my Series X controller to Microsoft under warranty assuming I had some sort of dead zone on the right thumbstick. But when I received the replacement and had the exact same problem, I figured it must be something software-wise. Unfortunately, I did not discover this thread until after receiving the replacement controller.
Pinpoint pitching is my favorite gameplay element of The Show 21 and this controller bug has made the game unplayable for me. I hope there is a fix either from Microsoft or SDS coming. For now, I have an extra USB-C to USB-A cable that appears to help reduce the issues, which at least makes the game playable again for now.