I think much of the confusion lies around what the name is. Although none of Economic Impact Payments made were taxable, they are Recovery Rebate Credits that do reduce the federal income tax for 2020. Just like a refund of 2019 federal tax during tax year 2020 would reduce federal tax. Oregon is a bit hinky among the states in using federal tax as a deduction. I believe Lacerte got it right. 

When all else fails, read the instructions page 13 🎠