Nationalizing all the players who want to play has never been a good choice, instead we need to reward ALL the guys who deserve it and there are many of them in many youth systems around the world, so it's just a question of common sense, you can find the best players everywhere, you just need to know how to select them and believe in them
The national team may not have time to sort these young best players from their local leagues and groom them to the point they become fit for international appearances and that is why you se that they result to this option of nationalising other players who are willing to players for them and has a proven track record of been good players with some exceptionalities.
National teams should not wait thill it few months or weeks to the tournament before they begin to make their selections, they can start ti.es ahead to start making that move where they will get professional scoutwho will go into this youth systems to get these players and begin the grooming already such that when international games surfaces they will not have challenges with sorting the player they will be needing.