IRA Deduction Worksheet LIne 2 earned income for self employment

The IRA Deduction Worksheet, Line 2 earned income for self employment.

Turbotax does not reduce this by the self employed insurance deduction which is on Schedule 1 Line 17.

Qualified Business Income for form 8995 is reduced by the self employed insurance deduction.

Can anyone confirm that the IRA Deduction Worksheet is correct, and cite the source of the information?