Yes, that’s factory. Saving money at its finest!
You’re not incorrect to call it a ball joint, since it is in fact a ball and socket joint.
Just that the common name has become synonymous only with the steering “ball joints“ in the knuckle. And the words “tie rod ends“ or just “rod ends“ Have become more used in the case of the drag link and tie rod.
What you suggest has been done, and as Justino pointed out, the updated parts are available over-the-counter so to speak.
Cutting and threading is not something that everybody can, or wants do anymore. And many shops don’t wanna touch steering linkage to modify it.
So buying a ready-made kit, such as we sell is the way to go for many. That way not only can you get double adjustable tie rods, but an adjustable drag link as well.
Which to my mind is something FORD should’ve done right from the get-go.