I'm struggling to see the profit potential in this.
Regardless, I think the GP poster doesn't understand what the IRS is empowered to do. They just enforce the tax code; they aren't allowed to change it.
There's a difference between just asking, "Does your business have any expenses? Okay, what are those?" and actively pursuing the deductions a tax payer may be eligible for.
A tax preparer has every incentive to help a tax payer find the correct and legal deductions. Nowhere in my comment did I say anything about changing the rules or paying more than someone owes. Not sure why this bad faith reading of the comment is so prevalent?