A brief chuckle, or booing or clapping can be an expression of your general agreement or disagreement.
However, when noise is generated that indiscriminately silences (CENSORS) another's free speech, it is a violation of the other person's free speech ("your freedom to swing your arms ends at my face").
To attempt to argue that booing is more important (to protect) than actual speech is absurd. One person can boo as long as the other person still has a chance to speak (equal time principle).
A reasonable (civil) person would simply leave the room (or click the "mute button") when they've decided to reject a person's viewpoint wholesale.
Do you also believe "disturbing the peace" (midnight road construction as performance art for example) is sacrosanct free speech?
RE: There's absolutely nothing wrong...