It restricts free speech in the most direct, literal sense - by... restricting your ability to freely speak.
The historical existence is simply irrelevant. Just like existence of pre-TV/newspaper speech is not a relevant factor in determining whether banning all TV/newspapers in 1950 restricts free speech
The historical existence is simply irrelevant. Just like existence of pre-TV/newspaper speech is not a relevant factor in determining whether banning all TV/newspapers in 1950 restricts free speech