I think it's because nice lines aren't a super big use case for WebGL. Most people use it for 3d scenes, 3d objects, etc. In other words, I suppose that three.

I think it's because nice lines aren't a super big use case for WebGL. Most people use it for 3d scenes, 3d objects, etc. In other words, I suppose that three.js doesn't have nice lines because nobody contributed it, which is usually a sign of low-ish demand. (I know nothing about three.js governance and goals so I might be mistaken)