I think you have to quantify it a bit for a better answer. When Itosu led the charge to change Okinawan martial arts to make them more plateable to the Japanese and got it into the school systems, none of those folks had ranks. Hell, they didn't even have names for their arts at that point or than "te". To line up with what the Dai Nippon Butoku Kai wanted and with the belt ranking system that Kano Jigoro took from swimming, Funakoshi, Motobu, etc. didn't have rank. Funakoshi himself was a godan for quite some time. So, from that aspect, there was no promotion for these folks and their early students. From that standpoint today, it could be very different. But, if someone develops a sogo budo art today, who is to say that they cannot assign themselves rank? At the end of the day, it would depend on if what they are doing works or not, right? And do others think they are doing it at the level they say they are with the self appointed rank. For me personally, I would not go that route. But I have also rolled with some BJJ blue belts that were better fighters than alot of the self-styled grandmasters, soke and sho-dai soke that I have run into. Just a thought....