This is the issue "never competed" you answered your own comment. I find it hard to understand how you can achieve these accolades when you have never ever proven it. Because boxing for example you can't be the WBC or the WBO champion if you have never had any boxing fights, same with MMA.. how can you be the UFC MW champion if you have never had any fights
Definitely back in early 90s you could never become a 6th degree black belt in BJJ without having an extensive career, it would be totally unheard of. But these days it seems all too easy without any proof
If Conor had thousands of BJJ matches and tournaments like Werdum for example, then thats different and he deserves it and earned it and proved it. Werdum is a real black belt because he has proved it over a long period.