@nuintari @jesterchen @actuallyautistic
I didn't "want" this question answered one way or another.
Is that so? I now believe you were specifically looking for speakerphone conversations that are way too loud. And I also believe that's what around 97% of respondents people assumed and actually answered to.
The reason it is rude is because of the effect speakerphone have on conversation volumes: It drives them up.
Those are two separate things: talking loud vs speakerphone. I hypothesize that people don't think it's hardly about the speakerphone at all, it's mostly about the volume.
I also hypothesize that a hushed conversation on speakerphone is much less rude, if it is rude at all, than a much too loud conversation between live persons.
The apparent fact that many of you observed that most people are unskilled using their speakerphone and talk too loud, has nothing to do with the speakerphone.