I really don't like the EU meta, only when they play Breach. When they play Sage instead of breach and only 1 duelist, they literaly have no flashbangs, that sucks for entry fragging and for getting kills while defending a site, also they lose the ability to clear corners and to retake a site more easily.
I believe when EU faces the NA and BR teams they will get destroyed by the Flashbangs, the agression, and the retake capability the flashes bring.
Coming from CS, I know that flashbangs are a big part in strategies, there's no way a no flashbang meta is a good one. That will be tested in may at the first international event. Valorant Masters.