I don't believe that the majority of criticism is leveled at Zephyr just because they're successful in a scene with the lowest skill threshold or have Purge on the team.
Dude, that's exactly why they are criticized.
They're a group of american's who went to korea because it's easier there. People don't like purge because they don't think he's good enough at the game to deserve to be popular or earn a living off it. They don't like Zephyr for the same reasons.
But most of those people would probably do the same thing if they could get the same results, but they can't so they talk smack instead. They're just jelly haters.