https://blendermarket.com/products/old-auto-smooth

Are you frustrated by the recent changes to how Auto Smooth operates in Blender 4.1? If so, you're not alone. Personally, I found the new system lacking, which prompted me to create a solution.  Introducing the Old Auto Smooth Add-On for Blender. Made to mimic the behavior of previous Blender versions, this add-on presents a familiar interface and ensures the new auto smooth modifier automatically stays at the bottom of the stack at all times.