For those that do not know (everyone but @Deltakosh), Blender has 2 normals for every vertex (or at least 2 api accessible ones). A face normal for flat shading, and a normal for each vertex to be interpolated for smooth shading.
Early versions of the exporter had a custom switch to pick what was to be used. Eventually, this was pulled out and controlled by adding a ‘edge split’ modifier using the smooth shading normals. As I explore 2.80, selecting things is now with the left mouse, and right click brings up a context menu just like every other program on the planet (finally!).
The context menu for meshes varies by mode. In object (as opposed to edit) mode, it now has 2 menu options to select the shading to use. I am going put back the original way of doing either normal, but using Blender’s own switch.
The theme behind this is to the maximum extent possible, export what Blender is showing & by extension the more you know about Blender, the better your export results. Probably going cause a bunch of topics, but do not care. This topic can just be referenced linked as the answer. Not going to fight Blender’s UI improvements