Are EVs that widespread in the US already that you're at the stage where you need to move from incentivising EV purchases to normalising their taxation?
I think future proofing taxation now rather than waiting until enough people have EVs to try to resist it isn't a bad call, and can easily live in parallel with wanting to subsidize broader adoption.
I own an EV in Massachusetts and I’m not aware of any extra EV fees of any sort here. The only EV-specific thing the DMV even offers is an EV-only license plate, and the bi-annual registration fee for that plate is the same as a standard passenger vehicle plate ($60).