That's entirely different. The reason why ethanol degradation is a non-issue on modern cars is that they've been engineered to resist ethanol. The reason why grandpa lived to 100 years is through dumb luck.
So what, we need 300m new EVs, and a place to tear down all the current gas cars in America? Perfect, I'll buy a Tesla so Elon gets richer.
Obviously the intent isn't to destroy cars, not any more than the intent of driving gasoline cars is to heat the atmosphere.
>Sounds pretty wasteful for the environment to take all of these existing cars out, replace them with EVs, and dump the requirements into the electric grid.
Get your timelines straight. This all happened decades ago, before EVs were a thing. The cars on the road today aren't getting destroyed by ethanol.