No one is forcing Twatter to say anything, they are forced to let someone say something.
It is a result of free speech. Although not from the American perspective, as that only relates to the government. However, over here it also means that the government has to enforce your rights against others too. And since platforms like facebook and Twatter are as big as they are… Tough luck for them to have to host someone linking to a news article they wrote.
Clankers?