Why has this Kha'zix been Challenger for 3 seasons despite starting out in Bronze?

RTO Learns Kha'zix from a Challenger Kha'zix main! Why has this Kha'zix been Challenger for 3 seasons despite starting out in Bronze?

Sybr Socials:

Ultimate Guide to Kha'zix: https://rtoacademy.com/league-of-legends/jungle/khazix-guide
Twitch: https://www.twitch.tv/SyburnLoL
Youtube: https://www.youtube.com/c/SybrLoL
Twitter: https://twitter.com/SybrLoL