This is an excellent course. To be clear, it is not a "how to use FL" course (I use ableton personally) or a "how to design sounds with X synth" course, it is a "how to synthwave" course and it is great at that.
I loved how the instructor introduced different sections of the arrangement throughout the course. I lot of times you get 10 videos working on the same two bar loop and then 1-2 videos on arrangement. This was much better.
I have seen some complaints in the comments about the use of so many synth plugins. And yeah there are a lot. But a big part of synthwave is its use of some iconic old synth sounds and often times that means plugins. I will say that the only one used in this course I really think is essential is the Korg Polysyx (that bass patch is synthwave). The others can be replaced with cheaper/free alternatives.