"What am I missing?"

You might have overlooked that links are provided in this topic, for you to click on and follow, to use the IRS and government's resources and the VIN of that car and the purchase date to determine if that vehicle even qualified. Tesla reached the max sales for the credit (which was an incentive) and the models don't by default qualify for any credit.

Did you research that vehicle?

Example:

Expand the Tesla section at https://www.irs.gov/credits-deductions/manufacturers-and-models-for-new-qualified-clean-vehicles-pur... to see there is no 2021 credit.