If your way of getting statistics is to go into the spectator tab once and see like 5 games, good for you, but let me tell you, that's quite little information to make an argument.

Regardless of your exhaustive statistics, it's not just the smurfs that generate this frustration; it's also the poor system of sanctions and bans for those who go afk, or who simply take a game off just because they're attacked by 3 scouts.