I have a Software Engineering degree from Harvard Extension and I had to take quite a few exams in physically proctored environments. I could very easily manage in Madrid and London. It is not too hard for either the institution or the student.
I am now doing an Online MSc in CompSci at Georgia Tech. The online evaluation and proctoring is fine. I’ve taken one rather math-heavy course (Simulation) and it worked. I see the program however is struggling with the online evaluation of certain subjects (like Graduate Algorithms).
I see your point that a professor might prefer to have physical evaluation processes. I personally wouldn’t begrudge the institution as long as they gave me options for proctoring (at my own expense even) or the course selection was large enough to pick alternatives.