> Filing a 1040 in the US is also very easy

Not for most people. It’s a giant pain in the ass if you have bank accounts and want to file correctly.

If all you do is plug in your w-2 and pretend that’s your whole tax return and you don’t care about anything except the standard deduction, sure. That’s not correct for most people.

> state taxes are filed at the same time and each state has its own separate system

Can we stop pretending like this is a problem insurmountable for the federal government?

This idea that TurboTax can make this work but the government can’t is absurd.