The article's argument against programs like OMSCS is that the only feedback is from teaching assistants. This claim is not true. There is (a) automated grading of programming assignments, so your program runs against unseen test cases, (b) informal feedback from TAs and other students on Slack and other unofficial channels, (c) formal feedback from other students as part of grades in certain classes and group projects, and (d) feedback from professors to student questions during video office hours (in some courses).
Yes, lots of assignment and exam feedback does come from TAs, but it is comprehensive and valuable. The TAs are well versed in the course material and relay information and questions from and to the professors. I completed the program and at no point did I feel like I was receiving too little feedback on my work.