One more try.
Aim trainers teach you that where my crosshair is, the bullet goes. There is spread in Valorant. In Valorant, the crosshair does not indicate exactly where the bullet goes. You are training for a situation that does not exist. Aim trainers can typically teach you how to recover from poor play. Proper play requires you to not open yourself up to multiple angles at once and where you do, utility should assist you. You should be controlling your peeks, pre-aiming, understanding where the players can come from and prepare for enemy movement.
Players are not static. Players have unpredictable movement. Why do you think that even pro players mess up shots when they encounter multiple players from flank? I play dynamic aim training scenarios. I, once again, have extreme amounts of time in these scenarios. I have placements higher than pro players in scenarios that account for this. Aim trainers are not what prepare you for that situation. The understanding that mirroring movement is better than mouse movement, does. Understanding that spread becomes random in Valorant and is not like CS where it follows a consistent pattern.
Aim trainers can teach you mouse control. Yes. I have 4000 hours in aim trainers, this point is not lost on me. But even for the "some" players you identify, aim training is not what makes them better. What makes someone better is the theory and understanding about the game. A person who puts 1000 hours into the game is not better because they have mouse control. They are better because they understand better the theory of the game than a person who is brand new.
You have no idea how much time I've put into this. Go through my post history and you can see the things I've posted to this website specifically about aim. And if you've feel you've lost and you want to recover, just ask me where icebox is. But I promise you, I'm not speaking for a place of ignorance.
If it makes you feel any better, I would argue for a 1:4 split in time when it comes to aim training vs game time. But any more than that is diminishing returns.
https://imgur.com/a/LUM5QAv