The same is true in our case. We've had students who are now pharmacists. These were nevertheless good summer jobs for them because they helped them learn how to communicate, to go out and meet with the representatives of the municipalities and so on. They acquired all kinds of experience that served them well in their development.
Both components are important, of course. You mustn't focus solely on students who want a career in the field we propose. We prefer them, but others can definitely take advantage.