I've personally always hated these linkages in blenders. I would attempt to see if any 3d printer file sites have a similar enough design for drop-in use and print with a high wall count or full infill. Even if it breaks again, it would be less than a buck of material to go again. If I couldn't find a good enough start, I would grab my calipers and mockup a design.

If I didnt have a printer, then I would think about getting another of the same or similar model for parts use when the drive motor eventually burns out. This type of blender is what I consider a "blender-like-device". Something that is designed to look and act like a blender, but ultimately fails at being one after actually using it.