I can’t relate as to me spoilers don’t mean much. The story is either well told or it isn’t. Whenever I know how it ends it doesn’t make it for me any better or worse.

So I think it depends entirely to you. If you wanted to do Laez playthrough just to see where it goes, than yeah spending tenths of hours to do so sounds like a waste of time. However, knowing how are story ends and experiencing it are two very different things in my mind. So it is up to you if seeing Laez path progress is something you are willing to spend time experiencing.