Some people may even be slower on a test like this compared to something ingame, when you’re immersed, your reactions tend to become much more quick without much thinking. And you accomplish this better in a game than starring at a green button till it turns red or smth. Thats the case for me for instance. Then add the fact that you have to have ALOT of haste to go below 0,4 which is already “long”. Idk we had these short casts in the past and i never saw an issue with it. Bad people wont be able to kick while good people will do it.
Thats the kind of skill difference i actually want to see in Arena.