The fear is that the SVGmaxxing is limited to "X doing Y". If such 'template maxxing' exists, it will break for other templates, e.g. "X not doing Y", "X and Y doing Z", "X doing Y doing Z", etc.

I use LLMs for 3D CAD design in OpenSCAD.

There seems to be a very strong correlation between models that are good at SVG and models that are good at 3D CAD.

Anecdote I know, but there does seem to be generalization going on here.

If a model can improve at drawing "X doing Y" and that prompt wasn't in the training set then it means it has improved its internal mapping from text-to-spatial-to-text.