I think I read his tweet abt this a while ago but it might not be what you're talking abt so what I say might be wrong.
I'm pretty sure he doesn't have a problem with na players going to emea, he has a problem with the fact that there so few na teams for the amount of talent in the region and that forces them to go elsewhere. Tier 2 in na has so much talent that many emea and a couple apac teams have picked up players from na tier 2 instead of players from their own regions. Lev also picked up hella na players and furia used na players when they needed subs. Emea and apac get their own tier 1 league, yet na has to share with br and latam. Tricks point was that the amount of spots each region gets isnt balanced. If na has so much talent all the other regions want na players, then na should have a league of its own to accommodate all this talent. He was kinda saying that its not fair emea and apac get so many spots in their leagues yet have to look at other regions to find the talent to fill the league, yet na has so much talent and so little teams that so many good players dont get a spot. I dont think he wants smaller leagues in emea and apac tho, it was just the example he used. He wants na to have more teams.