But I agree with that statement. "Free speech" is often seen as absolute. But it is not absolute. Not even in the US. It never was. And it should not be. There is always a trade-off.
Limits are (copied from Wiki because I am lazy), for example: "libel, slander, obscenity, pornography, sedition, incitement, fighting words, classified information, copyright violation, trade secrets, food labeling, non-disclosure agreements, the right to privacy, dignity, the right to be forgotten, public security, and perjury"