It seems like CatZ is looking at this only from a player's point of view, which makes sense since he is a player and a good one at that, but esports isn't all about the players, it's an industry, and like any industry its purpose is to make money for those who invest in it. When an industry grows, you can tweak it to your liking since you'll have a big enough foundation that you can take a few risks without bringing the whole thing down, but getting there without your big names is impossible.
By excluding the players that he wants to exclude you make the competitor's product look so much better it's ridiculous. By excluding these players you're cutting off all the interest that these big names generate. It's crippling your profits from the beginning. Not smart.
I can see where he wants NA esports to go, and that'd be awesome if it got there, but you can't get there by excluding your biggest players simply because of some misconception that this will make the NA esports scene grow, when it's quite obvious that it will in fact hurt it.
How many of you that purchased NASL tickets would have done so if there were no Korean players like Boxer, MC, Nada or JulyZerg participating? How many of you would have just watched the GSL instead?
My point being.. you have to make it grow with what works, then when it's big enough that you can start taking risks by changing things up, that's when you do it. Not when the NA esports scene is still in its infancy.
Edit: Rewatched the interview, and it's hard to get a clear idea of what he's arguing, but it seems like he wants Koreans to have to come to the US to play in the NASL like foreigners have to go to Korea to play in the GSL, meaning change the NASL format to a GSL style offline tournament in the US. It's currently not viable for many reasons which have already been covered. The way NASL is doing things currently is the best way to make a GSL style tournament in the US viable at some point in the future.
It also seems like this is a convenient obstacle since he states his opinion pretty bluntly, "the NASL shouldn't have 10 Koreans in it." Kind of hard to not draw conclusions from that statement.