I'm the author of the original code and I think that my idea was that category number needs to be checked. (There can be much more points than we can have categories in a vector map, so we should tell the user when this issue arises and categories are being assigned. I think there is similar code in v.in.lidar.)

Adding a todo here or opening an issue is probably appropriate.

Ok, I’ll comment it out and add a TODO, leave it to you to open an issue.

Now added TODO comment.