Yes, why not. I am into esports and I know how good valorant is. It would be much popular as dota 2 only if it met the satisfaction it gives to dota 2 players/bettors. Because as you have said, it is the same as csgo with a little twist just like overwatch, it means that the possible players/bettors might be coming from these popular games.
No Joke! if it becomes like Dota 2, its whole market will flourish because we can see how Dota 2 gained some support from their event every year. Now that their Dota 2 Battle Pass is about to end the world competition will come and you can see how this game became so popular because one of the reasons is almost every country in the world knows this game and everyone has their own unique skills on how to counter their opponent. I hope Valorant has this kind of popularity in the future and players all around the world will be gathered for their international competition.