I agree with you. There are many of us unable to get an IRS-issued PIN by trying to use their GET IP PIN website, as the site doesn't recognize any of the input criteria (e.g. credit cards, student loans, etc.) as a match for their records, same as your experience.
The IRS needs to expand their criteria, e.g. allowing the input of last year's AGI as a valid identity check. As the GET IP PIN operates now, it is too much of a burden on tax payers.
Turbotax experts, if you have any means of raising awareness about this issue to the IRS, please chime in.
