Those are all just examples of the Supreme Court rewriting the Constitution through interpretation, or they aren't examples of limitations on free speech.
Who says what the "original interpretation" of the US Constitution is exactly?
The people who wrote it, isn't that why we write things down, to preserve the meaning?
How do you incorporate the internet into the first amendment if no one can interpret the law?
Legislation is up to congress.
Who decides what the 9A means? What happens when a new right is considered to exist by the people?
The founder never thought anyone would be needed to define our natural rights, in fact some said the bill of rights was unnecessary. Of course they couldn't foresee modern legislators and lawyers who would challenge the bill of rights.
The US Govt makes a new law that has never existed in the US, not in 1776, not in 1789, not in 1865, not in 2013, who decides whether this new law is constitutional when the issues could not have been clear to those who wrote the constitution?
If a new law is needed to give the government a power not enumerated in the constitution, see article 5.
Without someone to interpret the constitution, it doesn't mean anything. That's what courts do. That's what judicial power is.