As of Blender 3.3.0, Shade Smoothing with Auto-Smooth is now built-in.

This add-on adds 2 new buttons in a UI Panel with an option to Shade Smooth with Auto-Shade-Smooth automatically activated and an option to Shade Flat with Auto-Shade-Smooth automatically de-activated. Short-term, this may not seem like a big deal, but long term, it saves you a lot of time