Personally I’m for keeping Hugo [and the sites it generates] as lean & mean as possible. I get a bit OCD about removing unused ‘bloat’ sometiimes. So, for me, a load of extra shortcodes I wasn’t using would be just that; extra bloat.
That said, I’m not into re-inventing the wheel either. So, maybe a separate repo for user-contributed shortcodes would be a useful resource.