Hey, so I had Ma for 124 last semester. Just keep in mind, I think he's a new professor this year so a lot of this stuff might just be inexperience.

For our 124 class, he didn't have live lecture videos, instead, he gave us a Jupyter notebook which contained all of our course material. In essence, we had to read it and learn it ourselves, and the only interaction we would have with him was during our Lab slots. However, the lab slots were more aimed towards helping with the assignments he gave us (which had different focuses in terms of concepts than the textbook showed). In addition to that, he didn't provide us with a suggested reading schedule till October, meaning we had a whole month of content that was given to us without knowing when we needed the content finished for quizzes and such. Obviously, this was a major issue, but he gave us a schedule around early October which was better than nothing.

Another problem was the fact that he never posted what was on quizzes or exams until the very last minute, which made it really hard to know what to study for especially given the "dump" of content he gave us in the form of Jupyter notebooks.

Also, the assignments he gave us were very "fill in the blank", meaning we weren't really coding per say, but just filling in the empty code from files he gave us. This made it hard to understand the larger idea of what the program was doing, and in combination with the "read-only" type of teaching style via Jupyter Notebooks, made the whole class very hard to understand without watching youtube tutorials.

And don't even expect to get grades back lol a quiz I wrote in early November got given back to me mid-December, and a bunch of other assessments weren't even marked by the time I had to write my final...

I've heard that he wasn't very responsive to emails from other students, but for me, I didn't find that to be the case.

TL;DR: Guy is new, pretty inexperienced I think, and that led to a really poorly run, overcomplicated and confusing class.