Possibly but I think a lot of what can be taught would be of interest to teenagers. Like the real cost of financing college and how credit card interest works. There really is a litany of small things that can be catalogued as "personal finance" that young people could find interesting. After all, every kid wants to "be rich" one day.
Detailing how compound interest works and how easy it is to begin investing in the free market with a small bit early that can turn into much more 25 years down the road, for example. FWIW I had a similar class in high school and loved it. Learning about markets as well as basic things like managing a checking account were fun and felt empowering. It was a very practical course and I'd agree with you that avoiding the abstract is probably important.
Kids, and many adults, really do not understand the relationship between money and time and what time is better to teach people about that than when they have a lot of time left?
I think it's important to champion capitalism and free, public, markets, as it is our proven way of life, and teach young people how they can choose to participate in it without much to start with. Much better than trends in teaching kids it is hopeless and we need to socialize everything.