The defaults matter. A very large chunk of the population will not know there is a setting, and will not bother to change it unless they have a reason to change it. Therefore, whatever the default setting is will reflect a major chunk of the population.
Your point? Those people who want it on will turn it on - that solves your problem right there. If people don’t think to turn it on, they obviously either didn’t want it on, or really couldn’t care either way.
“A very large chunk of the population will not know there is a setting?”
Really dude? That’s the best you can come up with? So I guess a very large chunk of the population don’t know what an options menu is or how to access it? I’m surprised they even understood how to install the game. Hell, the way you make it sound, the game should just enable every single setting in the game by default, because people won’t even know that they’re there!
If VOIP was to default to off (friends only) for everyone, I would be talking to half my team at best in most of the games I play.
No you wouldn’t, because voip appears to be a server setting, where if you have it enabled EVERYONE you play with does - you should learn more about the game before getting mad at nothing:
http://www.splashdamage.com/forums/showpost.php?p=208881&postcount=67
http://www.splashdamage.com/forums/showpost.php?p=208930&postcount=71
http://www.splashdamage.com/forums/showpost.php?p=211538&postcount=74 (the last part)

