Education is an interactive experience, the value of a good professor and classmates is helping to identify issues when you are stuck and nudge you just enough for you to connect the dots. As an undergraduate I liked attending study groups and office hours. I learned as much from my peers, both me helping them and them helping me, as I did from my professors. This spirit was difficult to replicate this in OMSCS.
The problem is that high tough, in-person communication is very effective but this doesn't "scale" well. I can only imagine how different the world would be if Plato was teaching online. :)
Also I was in the 2nd cohort, there were certainly a lot of "bugs" and issues they were working through. Additionally, the culture of video conference and zoom was also less a few years ago, which could make an impact.