And most Americans just pretend that it's "fine".
Fun fact - to avoid under-withholding my CPA wants to charge me $2300 per year, that's not tax deductible. A simple thing of making sure that my withholdings are correct throughout the year and I don't have to pay IRS more in April...
So no. This is a corrupt system, that most Americans just pretend is "the norm".
I am open to more direct evidence to the contrary though.
Right now, for the vast majority of the population, especially those who don't just pay an accountant, their taxes consist of a "Where's Waldo" copy-and-paste adventure combining information from their W-2s and 1099s onto a handful of other forms, then adding up like 3 numbers. If that describes your tax filing experience, a pre-filled form would be perfect. Any omitted details are more likely to be in the government's favor than your own.
The whole system is created to screw you... and yet many people defend it.
I have done that in multiple countries - getting tax refunds and other benefits at the end of the tax year. I even ran a business in the "tax heavy EU", where all of my tax related duties were at most 30 minutes per month(that's with payroll and other common business bookeping)
Meanwhile in US - IRS knows what you owe, IRS is legally banned to tell you and you're forced to pay a third party to send your documentation to IRS... oh... and they also make mistakes very often.
Yet for some reason, people like you are up in arms.. do you work at Intiut or something?