In some ways, digital methods are clearly best. And that big problem with digital sound doesn't apply to how well you can hear my voice over the phone, which is why Motorola and the other cellular-phone manufacturers digitize everything. But that's a technospeak kind of thing. Digital or smidgetal, it's all the same when you just want to talk. Motorola probably understand this.
Engineers know better.
When the phone rings, they know it's just a talking stick, too.