Is my muay thai gym a mcdojo?

So in my opinion the instructors really train us well, we spar do shin conditioning, bag work, technique work, cardio, and the gym also got into the WKBC kickboxing (includes muay thai) that is held in brazil. However the thing that worries me is their ranking system. I know that muay thai doesnt have a ranking system, but still. Anyways i asked the instructor how long it would take to get a black belt level and he said around 2years. So, any help?