Yup, people don't understand where the sports at right now but Flyweight prospects Joshua Van started training at 17-18 and he often says "I started MMA late" and it's true, especially at lower weights. There's rare exceptions like a Volkanovski who started at 22-23 or BSD ironically also at 22-23 both having small grappling backgrounds in Greco for Volk and Judo for BSD. Meanwhile a guy like Ilia Topuria began in Greco Roman wrestling at 7 but at 15 he began training out of an MMA gym, there was never a job or college, the goal since a young age was to be an MMA champion, had his pro debut right after turning 8 when it was legal. That's a lot of time and effort for a guy like Volk to give up.