Q.Leafy Pencil Plant
From my study of this plant, it should not be leafy. Mine is a few years old, about 4 foot tall but covered in leaves. Am I doing something wrong? I love my plant, as I started it from a few small cuttings and it has gone crazy. It also has almost like runners growing from the top. Very thin stems and are kind of curly in places.

The tiny leaves grow from the tips of the new plant growth and generally will drop off the plant as it ages.
The leaves are normal.
https://www.gardeningknowhow.com/ornamental/cacti-succulents/pencil-cactus/care-pencil-cactus.htm