Given how long we have all been subsidizing ICE buyers, I think it is fair to spread the love around a little.
I live in the UK where we pay heavy taxes on fuel and we pay higher taxes on vehicles with higher CO2 emissions.
Funny how their solution was to subsidize burning fossil fuels for car commutes to the office instead of, oh I don't know, MANDATING WFH!, given Germans are such staunched green environmentalists. Sure, let's turn off nuclear and ban plastic straws, but let's also subsidize the generation of diesel, brake pad and tire fine dust particles we breathe in, for commuting by car to work. We can't forget our car industry lobbyists.
But put a $7500 point-of-sale rebate on an electric car and people go nuts. So the solution is either make the EV subsidy less obvious, like we do for fossil fuels, or try to educate people on where their tax dollars actually go. The former is more feasible, certainly, in the modern political environment where ideology rules over facts.
The subsidies you talk about are US specific and was in rely to one about ICE buyers subsidising EV buyers in the UK.
In the UK we pay heavy fuel duties and car taxes so ICEs have not been subsidised any time recently, but, have been very heavily taxed.
There is no fairness in taxing UK ICE owners for subsidies received by American ICE owners.
ICE cars are already hugely subsidised by ignoring the health issues they cause e.g. air pollution
What we really need in the UK is better mass transit systems in cities and their commuter zones to remove cars from the roads