That's the narrow redefinition of free speech that's currently in vogue with people who want to crack down on free speech. The whole time I was growing up, until quite recently in fact, free speech meant the freedom to speak your mind. The idea that people would routinely get fired for voicing their opinions, which is the world the new ideologues want to create for us, would have seemed shockingly unfree.
The classic cliché of the limits of free speech is "yelling fire in a crowded theater". That's where society used to draw the limit. Those lines are being way, way, way moved, and the people moving them are pretending that they're just reiterating the old standard. It's a radical shift, and everyone who doesn't subscribe to this orthodoxy can feel it, even if they're too vulnerable to be able to stand up to the priests.