Oh come on Jackson you gotta be kidding me

[Rob]

Apparently so, the picture of the back is solid except for the battery door.

[Dave W]

I saw that and thought that the strings were anchored on the back of the body and then went through the body.
But from the pictures you can clearly see the ball ends are visible on the back end of the tailpiece and not on the back of the body.

So, by "String-Through-Body Hardtail", do they mean strings goes through the body of the bridge instead of through the body of the bass?

Sure looks like a top loader, not strung through body.

Hard to say what they mean. You may be right, they need to clear that up.