I’m not going to lie, I didn’t read all 4 pages so far just a few of the first page. 1. For karate to make a comeback it would have to have gone somewhere. Maybe adults are becoming interested in karate again for various reasons, but karate has been making its money from kids classes for decades, at least the 80s. 2. MMA was never about ‘brawling’ this is a very ignorant point made by people who have never actually fought, especially never fought full contact. 3. I’d love a source that OG fighters are encouraging their students not to go into MMA, as for the martial arts center title of schools, it’s likely just a branding thing. Even dedicated MMA gyms make most of their money from casual hobbyists, and calling something an MMA school might alienate potential costumers, where as martial arts center sounds less intimidating to hobbyists. 4. Karate has had a big footprint in MMA for a very long time, stars like Bas Rutten and chuck Liddell being early UFC stars, if you look into the backgrounds of UFC champions karate is the 4th or 5th base style with something like 17 champions having a karate base.(some are listed as kickboxing in list articles but if you actually dig into their background they began competing kickboxing after years of karate, sort of like Gabriel Varga.) I wouldn’t say karate is making a comeback so much as experiencing a renaissance. Part of that is the very high profile karate fighters in MMA, Cobra Kai, and Karate Combat.