That is largely true across a variety of sports. eSports like Starcraft typically peak between 18-22, and it's possible the real age is younger but minors are usually excluded from pro leagues because they can't sign contracts. Gymnastics seems to peak between age 13-16; it was enough of a problem that the FIG set an age limit of 16 so the sport wasn't dominated by prepubescent girls age 13-14 (18 for men because the events tend to be more strength-based than coordination-based). Top table tennis players usually tend to start between 4-6 [1] and win their championships around their early 20s. [2]

There's some lag between starting and being world-class simply because continued practice makes you better. Plus, you get much better at sustained focus and being able to connect disparate training experiences together as your consciousness develops in the teens.

[1] https://www.reddit.com/r/tabletennis/comments/1i085sr/a_coll...

[2] https://www.tabletennisdaily.com/forum/topics/what-is-the-pe...

IMO there is also muscle memory, strategy ect. Being able to process more information doesn't mean it's processed better, the contrary actually if you think about processing times