There will always be business cycles. There is no straight line growth; that's what regression lines are for.State laws are made by legislators from the communities around each state.
These guys and gals care nada about this internet thing when the local dealers sponsor local kids softball/soccer/football teams and also attend the rubber chicken campaign dinners and pay to do so.
Don't underestimate the power of local businesses to frame policy, especially since these dealerships feed many mouths.
EV sales have plateaued and there may not be enough buyers to absorb the current supply at profitable levels.
Too much too soon?
I do agree with you analysis; but it depends on the locale. In Silicon Valley, we are tech crazy; in the CA Central Valley not so much so.
But change is coming; you can't stop it.