My in-laws have a pretty good rule for marriage: “Both of you should give 60 and expect 40.“ Effort in a relationship is important. Part of that can be working to provide for the family, whether by earning money or not. Part of it can be spending responsibly.
None of this means that a relationship between someone who has or earns more and someone who has or earns less money is going to be a problem.
Being unequally yoked refers to being deeply involved with people who are working counter to God’s purpose. It’s not about contributing unequally to relationships or even inherently about marriage.
2 Corinthians 6:14-18