This right click select post outlines the reasons to make "Angle" the default limit method: https://blender.community/c/rightclickselect/BVfbbc/ In short: Beveling every single edge rather than just sharp edges is rarely the desired behavior, and the placement of the property in the UI makes it easy to see the property's importance and toggle it. Differential Revision: https://developer.blender.org/D8961