In fact there's no area where people are trying to equate words with the actions they might lead to. People oppose words on the grounds of what they might lead to, but that's very different from saying the words are what they might lead to.
But why, then, do some people hold onto this absurdity tooth and nail, refusing to give it up even when it's clearly causing miscommunication? It gives some benefit to them.
The benefit is: People with weak ideas recognize that they won't win a neutral exchange of ideas. So they want to avoid the frame where the interaction is just a neutral exchange of ideas. Instead, they try to change the contest to something they can win - a violent power struggle.
They want a contest of power: Who can stigmatize, harass, and physically intimidate the other side into submission?
Because they sense they can win a contest of power, but they might not win a neutral exchange of ideas. There's nothing else to it - it's pure bad-faith power games straight out of 1920's Russia.
Of course, it's poisonous to civilization, since it weakens the discussion norms we need to find truth and good paths forward.