I think that has more to do with the fact that most scientists are not trained programmers! Plus a lot of data analysis work doesn't lend itself to the same sty

I think that has more to do with the fact that most scientists are not trained programmers! Plus a lot of data analysis work doesn't lend itself to the same style of programming IMO. While there could be more effort in getting things like library versions out there a lot of journals don't care so there's no pressure on scientists to provide it.