I think mostly scripters there are not programmers, they just want to help community to have some "unique" games so their knowledge about revision control (or version control) is close to zero, and so they don't want to learn a whole new thing that doesn't support their work IRL.
Anyway, using version control for small scripts is good too, since "many" small scripts is big too, it's hard to keep track of editing many scripts that do different things. When RMVXA was first released (demo version), I only did small scripts, but then I lost in code because after one or two week, I forgot what I had changed in those scripts for debugging.
IMO, scripters should know a bit about version control too, at least know to use GitHub, because it provides GUI so that even newbies can easily use without troubles. Also, learning to post feedback (issues) and commit their fixes/features to a repo is a need too.