Sorry, I don't have the time to read the linked FEM coding standards topic.
I would like to submit for general standards that when creating a new command that generates an object in the Model tree, the programmer should ensure that the label is available for translation. I've been asking for this for years (there's a very old ticket on Mantis), and no programmer seems to care about it. Currently, only the Part Primitives have translated labels.
This is just one of many usability issues in FreeCAD, and I think it's an important one that would be easy to fix. For most FreeCAD tools, the command is translated, but not its result.
I'm so tired of it not getting done that I would change the source code and submit a PR myself, if someone showed me how. I'm no programmer but I have an analytic mind.