No one would be able to see the world leader's tweets in their home feed. They would have to go to the specific world leader's page (or use a 3rd party app too

No one would be able to see the world leader's tweets in their home feed. They would have to go to the specific world leader's page (or use a 3rd party app too once again see Tweets from the world leaders in the home feed). The practical effect would be that only people who are very interested in a world leader (and bots) would retweet them. This would make the Twitter experience even more insular.