The problem is that some of the tax code is so arcane that 10 different accountants would likely come up with 10 different return totals, for a return much(!) less complex than Trump’s. So might 10 different IRS agents, for that matter.
On one question alone, some years back, I got 3 different answers from the IRS — I finally went with the interpretation a “supervisor” 2 levels up (from my 1st call) gave me, and even then I wasn’t sure she was correct.
I’m glad, sometimes, that I’m much too small a target to be much of a target!
I found a good local CPA and used him for years. After he passed, and 20 years later, I'm still using his son.