It is true that for some many it is challenging to have a high quality online course.

I believe some courses could be taken online. For example, here is an amazing course on Algorithms and Data Structures by Robert Sedgewick https://www.coursera.org/learn/algorithms-part1? at Coursera. It works really well for the online format. So, not all online classes suck.

My major was Physics and I was teaching all five years of the Graduate school. I do not have a slightest clue how is it possible to teach Physics remotely at the acceptable quality.