The main problem I have with the article is that it completely ignores the fact that players from the A-League are wanted by clubs all over the world, and that numerous players from the A-League have gone on to play overseas. The idea that all of them are there in spite of and not because of the A-League is a bit odd.
I certainly don't think that the finals series has anything to do with the style of play. Teams play to win in every league, whether there is a top 4 or a top 2 seems irrelevant (no matter whether mediocrity is rewarded).
Personally I don't think the A-League is terribly lacking technically, but I think it's quite poor tactically. I don't see many players who seem to have strong tactical discipline or much in the coaching that would stand up against clever disciplined opponents.
The stuff about Korea is meaningless