Some things are more easily measured than others, e.g. how much fuel has been used vs how much street lighting has been used. Some public spending is more aligned with usage than others, e.g. road wear aligns well with distance traveled vs water piping wear does not align with use. It is a very nice situation when spending depends on usage which is easily measured - tax burden can be concentrated on actual users and not distributed to wide population.

This is the point of the debate. Prior to electric vehicles, we have been more or less in a situation where we could concentrate tax burden of road maintenance on vehicle users/owners. Electric vehicle use is much harder to measure apart from coarse odometer readings taken during inspection.