Heya EQ ! Of course, there are indeed circumstances where one might want to "harden all UV edges" - it depends on the kind of asset. And of course not every asset can be made with everything soft - it depends. My point is that there is a popular misconception floating around that tends to make artists believe that they…
While this is focused on Toolbag 3's baker, the following tutorial covers all of your issues and then some: https://www.marmoset.co/posts/toolbag-baking-tutorial/ Check out the Basics and Best Results sections. "I never said that it is "pointless to worry about smoothing groups", quite the contrary. What I am saying is…