For teachers, assessment, both summative and formative, takes a lot of time for open-ended assignments. For students, they also tend to require a larger time-investement.
Setting up the course doesn't take much effort, but the supervision [of students] simply takes a lot of time.
They need to make a decision. They need to own it, right? Like, I selected the stack. You didn't tell me to use the stack. I selected the stack. And therefore, it's also my fault. Also my triumph, right, if it works great. If it doesn't work, you know, I need to take into account what I could do to improve the whole thing.