They can maybe make an impact... Maybe... but the problem I find is that anyone out front who's not actually "doing" anything beyond "catalyzing" is often viewed by the converts as a messiah and the skeptics as a charlatan. See: Greta Thunberg, Al Gore, etc. If they have a track record of execution in a different field they get a little more credibility, but still lots of derision. Ex: Bill Gates.