The issue as I see it is that college is a barometer for success in life, which for the sake of brevity I'll just say means economic success. It's not just a place of learning, it's the barrier to entry - and any metric that becomes a goal is prone to corruption.
A student won't necessarily think of using AI as cheating themselves out of an education because we don't teach the value of education except as a tool for economic success.
If the tool is education, the barrier to success is college, and the actual goal is to be economically successful, why wouldn't a student start using a tool that breaks open that barrier with as little effort as possible?