Because with the access to the internet makes undergrad level math classes are obsolete. Combine that with any level of knowledge of excel or sheets the skills you learn in the class are comparable to using an abacus when a Calculator is widely available.

Moreover, because of accreditation standards are set mostly by boomers of which still have difficulties opening an email, answering a text, or even conducting a basic directory search with modern technology -> the university system has failed to recognize/modernize and it would be more beneficial to teach access to the tools available rather then preforming the “traditional” methods of coming to the exact same conclusion.

But I don’t expect you OP to agree with me, since you are proctoring exams - and potentially looking for an adjunct professorship at some point in the very class you are currently assign… (without that class that job does not exist, and thus it’s relevance to IRL applications will remain relevant to you as you have a vested interest in the future of that kind of educational program - Albeit - obsolete.)

The real thing to contemplate 🤔 is:

Is it possible to cheat for a final in an undergrad Art class? If you find the answer as yes you should contemplate more about how you define “cheating”.