Now, I don't think it will "kill". But I do think it will be a decent competitor. See the thing with Riot is that they are very smart when it comes to marketing their products. LoL for example, although it's not my personal favorite, but it is still perceived to be more enjoyable than Dota2. So I think with the right marketing strategies that they usually do, they might shift a large chunk of players to the game but wouldn't kill CSGO
valorant looks good but i know for a fact people who play counter strike typically arent into cartoony games. i love counter strike and its gun play and valorant isnt doing it for me
Some competition won’t hurt it, but CS has paved the way for competitive shooters and will always be a classic people come back to. Expect Source 2 soon after the valorant release I bet