This proposal makes the common assumption that the federal EV tax credit costs us money.
The EV credit was sized and placed specifically to offset petroleum subsidies. In 2008 the Bush administration asked the DOE what an EV credit should be. The DOE asked the GAO to calculate petroleum subsidies; they came up with an average of $12k per ICE over it's lifetime*. $7,500 was calculated to be the NPV of $12k.
It was never intended to tilt the costs towards EVs, it was intended to level the costs already tilted towards petroleum.
Plus not everybody can or does take the credit (I have only fully taken it once, and I am on my 5th PEV), so letting EV owners keep their money "costs" far less than $7,500 per EV sold. But even if it was $7,500 per car, my point is that it doesn't cost us any more than someone buying an ICE. Personally, I would rather just see all the subsidies go away...
* The GAO definition of subsidies includes tax credits, but does NOT include externalities, wars, Hormuz security, etc