Agreed and that app also works in situations where you can't get an SMS.
I know, 99.9% of the time you need to deal with verifying your Apple ID, you're going to have SMS access
Really? I have SMS access 0% of the time, since I don't own any mobile devices. I guess that leave me S.O.L. My partner's "device" has SMS access about 1% of the time, because there's no coverage where we live. So I guess she's out too.
If they supported SMS to Google Voice numbers we'd have a chance at making use of this, but the FAQ claims no support for VOIP.