The description of your colleague actually applies to me quite well. I have reflected on whether it is legitimate to “force” students to use generative AI, and while I do not consider this an easy question that I have 'solved', I'll try to share some of my perspectives.
First, I want to consider the pragmatic perspective. That is, what does use of generative AI allow us to do that we otherwise cannot?
The pragmatic perspective can be considered from a ‘professional’ and ‘educational’ perspective. Professionally, at least in my own discipline (mathematics), there is no doubt of the relevance of generative AI. Not only is generative AI able to solve research level problems, but it has also been used to (partially) solve one of the most famous and long standing problems in all of mathematics - The Navier-Stokes problem. Educationally, it seems clear to me that generative AI is a double-edged sword. By this I mean that productive use can supercharge learning (e.g., by providing personalised explanations), but it can also undermine the learning process (e.g., by such personalised explanations which risk removing the ‘productive struggle’ necessary for learning).
Given that many students are likely to use generative AI as part of their studies (whether we like it or not), and are highly likely to encounter generative AI when they enter the workforce, is it ethical of us, as teachers, to leave them to separate productive from unproductive use on their own?
Pushing the ethical dimension further, one could also argue that we need to help students engage critically and responsibly with generative AI because the technology is so controversial.
I see this latter point as being aligned with my identity as researcher and teacher at the university level. My job is to systematically and critically approach difficult problems (ideally) of relevance to society, where knowledge is both the tool and goal. While personal beliefs, emotions, and prejudices should not be completely dismissed, they should be constantly challenged through critical and responsible engagement — just as we must be willing to challenge our ‘a priori’ knowledge (and methodology). To me, being a researcher is kind of like being Indiana Jones, with the thrill of exploring the unknown coming at the cost of intellectual, emotional, and physical discomfort. And as teachers, our jobs is to invite students to take part of this process (appropriately scaffolded, of course).
But does this I mean that I think we should “force” students to use generative AI? In my class, I try to sidestep this issue by giving the students free choice of which AI to use (and what to use it for). I explicitly state that students are free to choose small AI models, which they can run locally on their own computer (more than 2 million different models are currently available). When the environmental cost is brought down this way, I perceive the issue to be similar to whether we should allow students to refuse other uses of technology in our courses. In this case, I think it comes down to the specific learning goals. If skilled use in the specific technology is a learning goal, then they should not be allowed to refuse. But if the actual use of the technology itself is less important (than, say, manual mastery of related concepts), then refusal may be OK.
To conclude, I think that exactly because AI is controversial, we need to engage, not stick our heads in the sand. But we should do this for good reasons. If students push back, enter into a dialogue with them and try to find ways to give them room to manoeuvre. And work to make the point of why AI is being used visible.