Why sadly? I wouldn't be getting bothered by the limitations of those lacking the football knowledge and capacity, and completely ignorant of the league due to their own ineptness. Not every player who goes to England from the Dutch league is a success either.
I'd imagine English won't be taking a punt on LoI players for the sake of it. They have and will have their scouts at games here. It's a great time for LoI players with the league being noticed by those in the know. If players are performing consistently well and naturally gave the talent, their LoI performances are putting them in the shop window for decent wages on 2 or 3 year contracts that can set them up reasonable well for even after their careers come to an end.
There's an incentive there now for players to stay on in the league up to the ages of 21 to 23. If players are good enough, clubs will come calling. There should be know panic nor great necessity to head over at a young age.