If you want to understand just how little impact Twitter has on the real world, check out this list of The 25 Tweets that Show How Twitter Changed the World and for each one consider for a moment how much that tweet actually changed in the world.
(I think their number 1 is the only one that actually did have a large real-world impact. I think this tweet did really launch the Me Too movement. So it deserves to be #1, I'm just not sure if there should be a #2-25.)