I think it has pretty obvious logic - when I’m just reading the chat I don’t want others to think I am typing something, and vice-versa. So different icons above players is the idea.
Would be cool tbh
What if it was self referential,
Opening chat and typing will cause the player to pull out a floating keyboard and type on it, whereas voicechat would use the current grab-the-ear thing
Of course I don’t know if that would solve the problem you have. Maybe let it detect keypresses to make the animation go