By Jove! I think she's got it!
;-)
Although, actually, the honest "Average Joe" using one is very likely to have his real identy known.
Because they would have no particular reason to lie when completing the activation, may have used a debit or credit card to buy the phone from the store and probably will use a credit card if they buy additional minutes online.
The Tracfones are not INHERENTLY anonymous. It is just that normal consumer behavior can easily be subverted should one desire to remain anonymous.
(Sorry about complicating the issue even further for you.)