Well I can't very well mute other people's loud radios.Well then you're ridiculous.
Honestly for such an innocent game it would be nice to hear some friendly banter online. Perhaps we'll get it in an update?
My guess is something will come in the August update along with the ability to form locked friend parties. Either in-game chat among friends or just lobby chat with friends. It would seem a weird omission considering there's some form of chat among friends in their other online games and I'd be very surprised if they didn't already know there's some demand for it