The reason Ford factory end links break is due to RUST
My Ranger was about 3 years old when I replaced my front sway bar, and I couldn't even remove the end link bolt from the factory-installed plastic/fiber spacer; I replaced my factory front sway bar with a Roush 1" bar, then added new polyurethane insulators and Moog hardware.
The Ford factory through-bolts had rusted almost in half on both of the end-links. Frankly, I think it's due to some of Ford's bean-counters shaving a few cents per vehicle by ˘heapening the parts. This might save the company a little bit in the short term, but it is going to come back like a crocagator and bite Ford and it's fat asses.