Meh, if anything, children ruined online by asking for ridiculously dumb Pokémon on the GTS, not hackers.
For the competitive side of things, a friend of mine destroys on a daily basis kiddies who use legendaries and think they're hot shit. Hacking is one thing, but if you can't even fight properly, it doesn't mean anything. Defeating most hackers is easy, defeating hackers who know the mechanics is just a normal match because if you breed for IVs, natures and attacks, you'll usually be evenly matched.
tl;dr: don't blame you incompetency on other people.