It sounds like someone in this post doesn't understand how voice chat works in mmos. Typically you can toggle it on or off, and you are never forced to use or hear it. As for when it is turned on, some games are set so those who are close can hear, unless they are on a private chat channel. It is a system which works well, and helps bring people closer to the game world. It's also very helpful in dungeons when you don't have time to type.

Also, as a ps4 player, it's either in game chat, or no chat at all for me.