Eeek! Several flaws, but I’ll let others explain.
Instead, I highly suggest you (and anyone else who has a spouse) spend the $49 ($39 when on sale) and grab the much more comprehensive analysis tool below.
Much better starting point than your quickie analysis.
I have a similar situation to you and your spouse… tho my wife’s age is closer to mine.
I have no affiliation with this company… just love the ease and accuracy. For us, it helped convince me to begin SS at 8 months after full retirement age.
https://maximizemysocialsecurity.com