Author of go-sct here. It's totally true that it increased the LOC and is heavily based on C. There's a number of limitations in cgo such as not being able to use macros which caused the LOC bump.

The primary reason I did this was I wanted to learn more about cgo since I haven't used it in any useful way before.

This also allows it to be easily installed instead of having to download a .c file and compiling it.