This is not because the teams at Iceland sucked but because the meta is constantly changing. The meta at Iceland was the post plant and slow meta where teams used Astra and Viper to slow pushes and then used the post plant meta to their advantage. The teams that really thrived in that meta was V1 and Fnatic. Teams need to constantly reinvent their approach to the game and maintain consistency no matter what changes are made. You've gotta praise the teams that stay consistent in a constantly changing game like Valorant