States strapped for revenue often take a 'guilty until proven innocent' attitude towards taxes - first you file your taxes, then they claim you screwed it up and owe them money, then you waste your time proving you did it right in the first place. They aren't particularly competent, either - often they make mistakes.

Now you roll the dice each year and see if your state government happens to be rapacious or incompetent - sometimes you're lucky, sometimes you're not. After this bill passes, you'll get to roll the same dice fifty consecutive times.

Just a giant PITA.