Itemization reduces taxable income (otherwise you wouldn't do it at all)... you had the opposite problem.
Possibly an accountant could've had some helpful suggestions for you... as I mentioned IRA->Roth conversion is the easiest/best known way to max use of the tax credit for those without enough initial liability, but it's not the only one. Since you appear to be in the military, choosing to contribute to a roth TSP rather than a traditional one would've been an option for you in 2018 for example which would've raised your tax liability in a way they might've let you capture more (or all) of the tax credit.
That's probably true, given how many ways there are to increase tax liability (doubly so if you're aware in advance you'd need to) I would indeed be surprised if that's a large # of people.
Anybody trying to honestly compare costs would care.
Homelink is an additional $300 now. The phone charging cables and 14-50 adapter (none of which are included with the car now, but were last year) are another $50.
The destination charge is $200 higher now too.
Data will (in theory once they figure out how to bill their own customers) be another ~$100 a year for new customers, but was free for anyone who ordered before July 1 2018.
These, and the tax credit differences (and the FUSC refund if it applies to a given person) need to all be included for an honest comparison of then vs now pricing.