I think he alluded to that in his prior video, "How do deal with difficult Korean masters", or whatever that video was called. The upshot was that he just went to a different school and taught his own curriculum.
Also, regarding this new video, what does it mean to combine "taekwondo, boxing, kickboxing, wrestling, bjj, and MMA" ? Isn't that just MMA, period? Isn't that what the first M stands for?
And also, "All the good stuff you see in traditional martial arts (like belt progression)" ...but not forms of course. So it sounds like FTF is just MMA...but with belt colors?