The Borrower Consent to the Use of Tax Return Information document in your loan document package is not related to the loan type. It is in response to the Tax Payer First Act and industry practices.
The form is for when the lender has collected an IRS transcript from the loan parties and may want to use that information for business practices such as offers for financing, marketing, servicing, selling of the loan, etc.
You will have this document in your loan package when it is a chosen setting of the Lender. Some lenders collect this information at different stages of the loan origination process or in other manners. GoDocs can exclude the form from your packages at your instruction.