Do you really need Turbotax? Just feed it the tax code, your financial data, and the relevant forms and it should be good to go. Now we have freed up the labor of accountants so they can go be productive in another segment of society. /s

Looking from outside the US tax system, I feel taxes are intentionally complex to keep some people employed and to hide from questions.

well, you still need to drive some data: say you purchased some food, was that a personal purchase or was it business-related (e.g. a meal with a client). Software can help with that decision making.

But even if human interaction wasn't needed, the question still stands, would you trust an LLM to calculate your tax liability just by feeding it data?