I don't see how seeing SK, EG, or MSI being top means anything about the current metagame and balance. It's no different than any sports, a few teams are always going to be better than others because of skill, money, or something else.
From what I can see of his argument, the availability of blood chalice, striders, etc have lowered certain skills required to master the game (positioning, mana management). However, he seems to miss the fact that with removing those barriers, more importance have been placed on other skills as well as requiring new skills (ganking, late game supporting).