Coach touches on that in some of his Webinars, Chess online 1600-2400, etc. He says that if you enter the Accelerated Dragon via 2. ... g6 you have to contend with other things. For example, you need to deal with 3. d4 cxd4 4. Qxd4 or 3. c3. These lines tend to present some issues for Black and we can avoid them all with 2. ... Nc6.
You should not fear the Rossolimo. If I ask you right now, can you give me a line that troubles you as Black vs. the Rossolimo, I would be willing to bet that you cannot! My "fear" was based on some cursory reading about how this 3. Bb5 is all the rage, etc. but if you go through the lines coach recommends, I think you will prefer these to facing the 4. Qxd4 or 3. c3 lines. Black is fine in the Rossolimo.
I'm very impressed with the courses that I've looked at so far (Benko, Maroczy, Grand Prix vs 2...e6). I've been convinced that I should play these lines and I plan to become a pro member soon.
I do have a few questions:
1. There used to be the start of a Najdorf course. What happened to it?
2. Will there be a further course on the Reti/English, for lines that don't transpose to the Maroczy?
3. In the anti-Sicilian course, it seems that the lines are designed for Najdorf players (with an early ...d6). What is recommended vs 2. Nc3 if you want to play the Accelerated Dragon (2...Nc6, 2...g6)?