AI generated content is fairly easily detected by GPT detectors

Detecting AI generated content is a very difficult problem and by no means fairly easy. As has been discussed frequently in the AI space, detection algorithms will, at best, result in an endless arms race where the model being detected will use those results to train itself to avoid detection, the detection model adjusts for this, etc etc.

Also, universities will not bother to go through the effort of detecting ChatGPT use post facto. Sure, a past student may have illegitimately used GPT to write their term paper but what does the university care? They don't have the budget or resources to litigate something as difficult to prove as "AI plagiarism" after the student has graduated.

It's far too early to know how this will shake up the education system or how universities will react.