The issue is not paying our fair share, the issue is paying more than we would if we drove gas vehicles.
Perhaps in Washington State that is your issue, but that is not what we are discussing here.
The poster I was replying to lives in Alberta, and your experience in an entirely different country, in that state, has nothing to do with what they pay. Or whether what they pay is fair. And this point was not raised as a concern by the original poster.
Their only concern was paying any tax at all. Their concern was paying for road maintenance costs, period.
Most states and provinces I think have already applied a flat yearly registration fee surcharge to make up for lost gas tax revenue.