Shortening names based on context is something we do in the user interface throughout Blender. This is a simple automatic mechanism to do it for node panels as well, which significantly improves the Principled BSDF layout. We want the properties and sockets to be identifiable outside of the panel contextcontent, for example in the animation editor, API docs, or when exposing a single socket as a group input. So making the actual name shorter is not an option. Pull Request: https://projects.blender.org/blender/blender/pulls/112591