Most people should probably take the standard deduction, and not try to itemize their taxes? Most deductions require you to actually spend a certain amount of money to save anything, and the standard deduction is like 30k.
There are millions of permutations of different deductions, and that makes taxes seem scary, and society talks a ton about all these different rules, but I’m pretty confident that the average W2 American stays well within the happy-path of “employer takes a percentage of your income, and you ack that in April”
That's it, that's the hack that solves the problem of all the weird deductions - reducing it to word problems that you can answer - there's definitely a few dozen of them though.
The DeepMind personality cloner just asks questions. It is definitely not simple.
At some point there is irreducible complexity, but most tax questions are of this nature for all normal people - a huge portion of people could file a form 1040ez and be done with it.
I'm outside the "average" nowadays, but I've been paying someone to do my taxes for me for decades because I don't have the mental bandwidth to figure out all the things that could save me money on my taxes. All the way back to when I was earning well below the poverty line (though I paid someone less back then).