That is completely false. There are many exceptions to the first amendment which the court has decided don't abridge the freedom of speech.
A classic example of this: https://en.wikipedia.org/wiki/Threatening_the_president_of_t...
The courts can say anything they want, and they did... but then, so could the authors of the First Amendment, and they didn't.
The courts can say anything they want, and they did... but then, so could the authors of the First Amendment, and they didn't.