I wouldn't say I disagree per se, but I do have some issues with the argument.
EV tax concessions and student debt reductions may benefit the well off more, but they also encourage greater uptake in education and help address climate change. Everyone is fucked if we don't address climate change quickly enough, and so speed is paramount.
On education, I would consider it a failure of society if only people from well-off families are attending university. We need a highly educated populace to counter the rampant misinformation and disinformation that permeates the world today, and to participate in a society and economy that is becoming increasingly complex. I'd prefer a move back to free university to be honest, but by the authors argument, this would be even more unfair.
And on universal vs means testing, a separate argument against it is that these systems become very punitive. Our welfare system is decent on balance, but people who access it can end up being treated like a criminal and have to jump through excessive hoops because of the enforcement mechanisms to deal with purported abuse.
That all being said, I do think governments should try to address inequality as much as possible, so if policies can thread the needle of means testing that is restrained and not punitive while keeping costs reasonable, I'm all for it.
Hasn't been my experience, not that I disagree with your overall argument. Might differ by country and regulations etc.