>Is this not rational behavior?

If you think the purpose of an education is literally nothing more than the diploma, then yeah sure.

If you think that I'm interviewing you for an entry SWE job (yes, we do this still) and you think I'm going to hire you because you hyperoptimized a compsci degree to minimize the work and learning you had to do and maximized your GPA, then you're going to blow the interview and wind up another person on reddit scratching your head wondering why these mean companies just don't want to give you your $125k software dev job.

Obviously, you don't need a degree to learn enough to convince me that you'll be a productive member of our team (or at least good enough in the short term and productive after a few months). But in my experience, the ones who half ass and ChatGPT their way through college are almost never brilliant polymaths. In my experience as a student years back and my experience interviewing graduates now, those students breezed through their courses and sought out more challenging learning opportunities such as accelerated graduate courses, impressive work within student organizations (for example, winning CTFs competitions with their school's computer security group), etc. And that all shows up on resumes and in interviews in a way that's night and day vs the ones who got tricked into thinking that the only purpose of an education is to get a paper.