I disagree, what you described is really just scratching the surface. Personal finance can become massively complicated, especially when you hit inflection points in your life like having a child, trying to buy a home, or nearing retirement. It is "boring and unsophisticated" math at the end of the day, but there are so many variables that it quickly becomes difficult to comprehend for most people.
People "don't know what they don't know" when it comes to financial health, especially surrounding things like proper insurance coverage and tax optimization. Software that can keep an eye on your finances and alert you to anything that seems off, or better yet, perform the necessary actions to keep you in good financial health, would be a huge help to these people.