If korean player base will grow atleast half as big as in LoL, Koreans will dominate Valorant in 1-2 years maximum. Agent mechanics and reflexes are too good. Now its just matter of game sense and aim.
Koreans have always been amazing at ability / team based games so no spoiler they would do good in Valorant . But i kinda disagree with your opinion . If you have played Overwatch and Valo both at high elo / semi-pro level you will understand the similarities , one of the reasons Koreans can't dominate (necessarily) is because Valorant has much more solo carry potential . Going further Csgo has even more solo carry potential . It's one of the reasons CSGO players despise Valorant because the utility sometimes gives the player inferior to you have a level playing field with you . You can downvote this as much as you want but this is facts .
Koreans strong in every game they commited. Fighting games or SC isn't team games. And they never commited into CS.
I believe their strengths is hard work, discipline, reflexes and ofcourse ability to adapt to any game mechanic no matter how hard it is to execute. Also as far as I understand Koreans treat games much more serious than any other country.