Why was the line cut?

I am having trouble understanding why a cable needs to be cut and spliced when it is long enough to reach my home.

On Monday, a technician ran a long, continuous cable pole to pole, down to my yard, and to the box on the side of my house. I was happy. He stated another tech would be out to bury it soon. A different tech came out the next day, cut the cable at the pole, and attached a separate cable to my house that they then buried.

Why? The continuous line had plenty of slack to bury without issue. I was glad to not finally be on split wires with some chance of issues, namely water getting in the split which is why I needed the line replaced. I called Xfinity to schedule a new appointment because this seemed to be a mistake. The same tech from Monday came out for the new appointment and simply replaced the bottom half, telling me that splitting the line is necessary. I am struggling to understand why.

I attached a simple, top-down example made with Paint.
On the left is Monday and on the right is Tuesday.