There was a saying where I went to high school: “the language programme students are not better at languages, they’re just worse at math”.
But to further the GP question there are lots of examples of people not working in their degree in both directions. The entire computer industry was built by people without a Computer Science degree. Today huge numbers of programmers have no degree at all.
To refer back to the original post about the farrier turned mechanic. Most comments seem to miss the point. Change is coming. You can lean into the change and prosper. Or fight the change and vanish. Those with enough vision, creativity, adaptability will continue to thrive.